Quiz
Unit 1: Dynamics
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Perguntas do quiz (7)
1A ball is thrown into the air with an initial velocity that has a horizontal component of 4.0 m/s [right] and a vertical component of 3.0 m/s [up]. What is the speed of the ball at the top of its trajectory (ignore air resistance).
- A0
- B3.0 m/s
- C4.0 m/s
- D5.0 m/s
- E9.8 m/s
2The magnitude of the acceleration of the same ball is:
- A0
- B3.0 m/s
- C4.0 m/s
- D5.0 m/s
- E9.8 m/s
3The horizontal acceleration of the ball is 0.
- AVerdadeiro
- BFalso
4Box A is released from the top of a frictionless ramp inclined at 30 degrees (I couldn't find the symbol) to the horizontal at the same time that Box B is dropped from the same height into free fall. Which reaches the ground first.
- AYes
- BSame time
- CBox A
- DBox B
5The normal force of a box on an inclined plane is [blank_start]perpendicular to the surface[blank_end] and equal in magnitude to [blank_start]mgcosθ[blank_end].
- Aperpendicular to the surface
- Bparallel to the surface
- Cequal in magnitude to the weight
- Dup
- Emgcosθ
- Fmgsinθ
- Gmgtanθ
- Hthe weight of the box
- Igravity
6A car of mass M collides with a truck of mass 3M. The force exerted by the car on the truck must be [blank_start]equal to[blank_end] the force exerted by the truck on the car.
- Aequal to, equal, same as
7A person of mass M is in an elevator that has an acceleration of A [up]. The apparent weight of that person is M(A+g).
- AVerdadeiro
- BFalso
Informações
- Descrição
- Questions from my Grade 12 dynamics unit test. Contains: Tension, inclined planes, projectiles, pulley systems, gravitation and more.
- Autor
- Holly Wilson8430
- Idioma
- English
- Visualizações
- 107
- Etiquetas
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