Test
Physics 202 Online Mock Exam
Este test tiene tiempo límite, así que se abre en el reproductor de siempre.
Preguntas del test (31)
1A projectile is fired horizontally in a region of no air resistance. The projectile maintains its horizontal component of velocity because
- Ait is acted upon by any force
- Bit is not acted upon by any horizontal force
- Cit has no vertical component of velocity to begin with
- Dnone of these
2A 100-N force vector, acting at an angle of 45 degrees to the horizontal, has
- Aa greater magnitude of vertical component
- Ba greater magnitude of horizontal component
- Cthe same magnitude of vertical and horizontal components
- Dno vertical and horizontal components
3A car travels 120 km east and then 50 km north. What distance should the car travel in order to return to its origin in a straight path?
- A70km
- B120km
- C130 km
- D170 km
4At what angle should the car in preceding item head in order to return to its origin in a straight path?
- A22.60 north of east
- B22.60 south of west
- C67.40 north of east
- D67.40 south of west
5What can be said when a net force acts on a body?
- Athe body is at rest
- Bthe body is in uniform motion
- Cthe body has no acceleration
- Dthe body has a constant acceleration
6What is the acceleration of a car that maintains a constant velocity of 60 km/h for 2 hrs
- A0
- B3600 km/ s2
- C60 km/s2
- D120 km / s2
7A ball is thrown upward and caught when it comes back down. Neglecting air resistance, the speed with which the ball is caught is
- Aless than the speed it had when thrown upward
- Bmore than the speed it had when thrown upward
- Cthe same speed it had when thrown upward
- Dzero
8A stone is thrown at an angle of 30 degrees above the horizontal. As it rises, its vertical component of velocity
- Aincreases
- Bdecreases
- Cremains unchanged
- Dexceeds its horizontal component of velocity
9If you drop an object, it will accelerate downward at a rate of 9.8 m/s2. If you instead throw it upward, its acceleration (in the absence of air resistance) will be
- Aless than 9.8 m/s2
- Bgreater than 9.8 m/s2
- C9.8 m/s2
- Ddependent on the weight of the object
10You stand at the top of a cliff and throw a rock downward, and another rock horizontally at the same speed. The rock that stays in the air for the longer time is the one thrown
- Adownward
- Bhorizontally
- Cboth take the same speed
- Dnot enough information given
11 Races are timed to 1/1000 of a second. What distance could skater moving at a speed of 10 m/s travel in that period of time?
- A10 mm
- B10 cm
- C1 mm
- D1 m
12A, B and C are coplanar, concurrent forces. If A= 100 dyn, 35o N of W; B= 150 dyn, 25o W of S; and A+B+C = 200 dyn, E:
1. What is the magnitude of C?- A78.689 dyn
- B200 dyn
- C354.138 dyn
- D345.308 dyn
13A, B and C are coplanar, concurrent forces. If A= 100 dyn, 35 degrees N of W; B= 150 dyn, 25 degrees W of S; and A+B+C = 200 dyn, E:
2. What is the direction of C?- A12.822 degrees N of E
- B12.822 degrees S of W
- C77.178 degrees N of E
- D77.178 degrees S of W
14A, B and C are coplanar, concurrent forces. If A= 100 dyn, 35 degrees N of W; B= 150 dyn, 25 degrees W of S; and A+B+C = 200 dyn, E:
3. What is the magnitude of A-B-2C?- A-709.138 dyn
- B710.058 dyn
- C709.138 dyn
- D-710.058 dyn
15A, B and C are coplanar, concurrent forces. If A= 100 dyn, 35 degrees N of W; B= 150 dyn, 25 degrees W of S; and A+B+C = 200 dyn, E:
4. What is the direction of A-B-2C?- A87.0837 degrees S of E
- B87.08370 N of W
- C2.916 degrees S of E
- D2.916 degrees N of W
16II. From the top of a 100-m cliff overlooking the sea, a physics student throws, stones A and B. The stones have identical initial speeds of Vo =13 m/s and are thrown at the same angle of θ = 30o, stone A above the horizontal and stone B below the horizontal. Neglecting air resistance:
5. What is the velocity of stone A just before it hits the lake?- A46.139 m/s
- B44.744 m/s
- C11.258 m/s
- D12.354 m/s
17II. From the top of a 100-m cliff overlooking the sea, a physics student throws, stones A and B. The stones have identical initial speeds of Vo =13 m/s and are thrown at the same angle of θ = 30o, stone A above the horizontal and stone B below the horizontal. Neglecting air resistance:
6. What is the velocity of stone B just before it hits the lake?- A44.75 m/s
- B14.121 m/s
- C11.258 m/s
- D46.144 m/s
18II. From the top of a 100-m cliff overlooking the sea, a physics student throws, stones A and B. The stones have identical initial speeds of Vo =13 m/s and are thrown at the same angle of θ = 30o, stone A above the horizontal and stone B below the horizontal. Neglecting air resistance:
7. What is the distance between the points where the stones hit the lake?- A15.643 m
- B58.87 m
- C14.929 m
- D43.941 m
19II. From the top of a 100-m cliff overlooking the sea, a physics student throws, stones A and B. The stones have identical initial speeds of Vo =13 m/s and are thrown at the same angle of θ = 30o, stone A above the horizontal and stone B below the horizontal. Neglecting air resistance:
8. How long after stone B hits the lake does stone A hit the lake?- A5.229 sec
- B2.303 sec
- C1.326 sec
- D3.629 sec
20III. A car and a truck start from rest at the same instant, with the car initially at some distance behind the truck. The truck has a constant acceleration of 3 ft/s2 while the car has a constant acceleration 4 ft/s2. The car overtakes the truck after the truck has moved 60ft.
9. How long did it take the car to overtake the truck?- A6.325 sec
- B1.785 sec
- C8.110 sec
- D12 sec
21III. A car and a truck start from rest at the same instant, with the car initially at some distance behind the truck. The truck has a constant acceleration of 3 ft/s2 while the car has a constant acceleration 4 ft/s2. The car overtakes the truck after the truck has moved 60ft.
10. How far was the car behind the truck initially?- A80.011 m
- B20.011 m
- C80.011 ft
- D20.011 ft
22III. A car and a truck start from rest at the same instant, with the car initially at some distance behind the truck. The truck has a constant acceleration of 3 ft/s2 while the car has a constant acceleration 4 ft/s2. The car overtakes the truck after the truck has moved 60ft.
11. What was the velocity of the car when they were abreast?- A18.975 m/s
- B18.975 ft/s
- C25.3 m/s
- D25.3 ft/s
23III. A car and a truck start from rest at the same instant, with the car initially at some distance behind the truck. The truck has a constant acceleration of 3 ft/s2 while the car has a constant acceleration 4 ft/s2. The car overtakes the truck after the truck has moved 60ft.
12. What was the velocity of the truck when they were abreast?- A18.975 m/s
- B18.975 ft/s
- C25.3 m/s
- D25.3 ft/s
- A18.975 m/s
24IV. The system shown is in equilibrium.
13. What is the tension T3 in cord 3?
- A1003.820 N
- B819.615 N
- C300 N
- D956.712 N
25IV. The system shown is in equilibrium.
14. What is the tension T4 in cord 4?
- A163.3824 N
- B819.615 N
- C1005.407 N
- D926.5878 N
26IV. The system shown is in equilibrium.
15. What is the tension T5 in cord 5?
- A1005.4066 N
- B163.3824 N
- C940.8819 N
- D819.34N
2716. What is the weight of block B?
- A163.3824 N
- B819.615 N
- C1005.407 N
- D926.5878 N
28V. In the figure below, the pulleys are light and frictionless, and the coefficients of friction between the blocks and the surfaces are μk = 0.10 and μs = 0.30. If the hanging block X moves down a distance of 0.5m in 0.5s starting from rest:
17. What is the constant acceleration of the system?
- A4 m/s2
- B8 m/s2
- C2 m/s2
- D 0
29V. In the figure below, the pulleys are light and frictionless, and the coefficients of friction between the blocks and the surfaces are μk = 0.10 and μs = 0.30. If the hanging block X moves down a distance of 0.5m in 0.5s starting from rest:
18. What is the tension in the cord connecting the 40-kg block and the 10-kg block?
- A200 N
- B199.2 N
- C236.657 N
- D45.257 N
30V. In the figure below, the pulleys are light and frictionless, and the coefficients of friction between the blocks and the surfaces are μk = 0.10 and μs = 0.30. If the hanging block X moves down a distance of 0.5m in 0.5s starting from rest:
19. What is the tension in the cord connecting the 10-kg block and the 20-kg block?
- A84.87 N
- B199.23 N
- C980 N
- D296.687 N
31V. In the figure below, the pulleys are light and frictionless, and the coefficients of friction between the blocks and the surfaces are μk = 0.10 and μs = 0.30. If the hanging block X moves down a distance of 0.5m in 0.5s starting from rest:
20. What is the mass of the hanging block X?
- A68.325 kg
- B68.325 N
- C669.585 kg
- D669.585 N
Información
- Descripción
- brought you by: Engineering Student Council AY. 2015-2016
- Autor
- classicjohn01
- Idioma
- English
- Visitas
- 39
- Etiquetas
- Valoración
- Aún sin valoraciones Valora este test