Linear Motion
Projectile Motion
Conceptual Kinematics
Newton's Laws
Force Calculations
100
What is the slope of a distance vs. time graph?
velocity
100
An archer shoots an arrow straight up from the surface of the Earth. What is the velocity at the top of the arrow's path?
0 m/s
100
What happens to an object when the velocity is negative and the acceleration is also negative?
It speeds up in the negative direction
100
What is Newton's Second Law?
F = ma
100
An object weighs 100 N on Earth. What is the object's mass?
10.2 kg
200
If an object travels 180 m east and 50 m west, what is its total displacement?
130 m east
200
At the top of a projectile's parabolic trajectory, what direction is acceleration?
Down
200
Describe the velocity of the object from its displacement vs. time graph.
Positive and constant
200
What is inertia?
An object's resistance to a change in motion
200
A horizontal force of 10 N is used to push a 5 kg block across a tabletop that has a coefficient of kinetic friction of 0.1. What is the acceleration of the block?
a = 1.02 m/s2
300
A car accelerates from 30 m/s to 50 m/s in 10 seconds. What was the car's acceleration?
2 m/s2
300
An object is thrown off a cliff above level ground with an initial horizontal velocity of 20 m/s. It takes 5 seconds for the object to reach the ground. If air resistance is negligible, how far does the object land from the bottom of the cliff?
100 m
300
Which graph portrays the motion of an object with a positive velocity and a negative acceleration?
C
300
What is Newton's third law?
Every action has an equal and opposite reaction
300
A student that has a mass of 70 kg is standing in an elevator car. The elevator is accelerating downward at 2 m/s2. What is the student's apparent weight?
546 N
400
An object's motion is given by the equation x(t) = 3 + 5t2. What is the object's acceleration at t = 2 seconds?
a = 10 m/s2
400
An object is thrown off a cliff above level ground with an initial horizontal velocity of 20 m/s. It takes 5 seconds for the object to reach the ground. If air resistance is negligible, how high was the cliff?
122.5 m
400
What are three features you can use to accelerate in a car?
Gas pedal, brake pedal, steering wheel
400
Is velocity constant in uniform circular motion?
No, speed is constant. Velocity changes direction, so it is not constant.
400
What is the maximum speed a vehicle can travel along a circular turn without leaving the road if the turn has a radius of 60 m and the coefficient of friction between the road and the tires is 0.4?
15.3 m/s
500
A ball is thrown straight up with an initial velocity of 15 m/s. What is the maximum height attained by the ball?
11.5 m
500
A large cannon is fired from ground level over level ground at an angle of 35o above the horizontal. The muzzle speed of the cannonball is 100 m/s. What maximum height does the cannonball reach?
168 m
500
What time does the largest magnitude of acceleration occur on this graph?
5 seconds
500
A child of mass 50 kg is standing on a frictionless surface. The child throws a ball of mass 5 kg with a force of 25 N. What is the ratio of the acceleration of the ball to the acceleration of the child?
10:1
500
What is the speed of the block when it reaches the bottom of the ramp if the it starts from rest? Assume the ramp is frictionless.
9.9 m/s