# Unit 1: Dynamics

Quiz by Holly Wilson8430, updated more than 1 year ago
 Created by Holly Wilson8430 over 5 years ago
41
0

### Description

Questions from my Grade 12 dynamics unit test. Contains: Tension, inclined planes, projectiles, pulley systems, gravitation and more.

## Resource summary

### Question 1

Question
A 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).
• 0
• 3.0 m/s
• 4.0 m/s
• 5.0 m/s
• 9.8 m/s

### Question 2

Question
The magnitude of the acceleration of the same ball is:
• 0
• 3.0 m/s
• 4.0 m/s
• 5.0 m/s
• 9.8 m/s

### Question 3

Question
The horizontal acceleration of the ball is 0.
• True
• False

### Question 4

Question
Box 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.
• Yes
• Same time
• Box A
• Box B

### Question 5

Question
The 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].
• perpendicular to the surface
• parallel to the surface
• equal in magnitude to the weight
• up
• mgcosθ
• mgsinθ
• mgtanθ
• the weight of the box
• gravity

### Question 6

Question
A 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.
• equal to, equal, same as

### Question 7

Question
A 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).
• True
• False

### Similar

Using GoConqr to study science
Junior Cert Physics formulas
Units of measurement - physics
JC Science: Force, Work and Power
AQA Physics P1 Quiz
GCSE AQA Physics - Unit 3
GCSE AQA Physics 1 Energy & Efficiency
Physics Revision
OCR Physics P4 Revision
Energy, Mass, & Conversions
GCSE Physics P7 (OCR) - Light, Telescopes, and Images