Kinematics
Without any reference to direction, how fast an object moves refers to its
Speed
Give an example of what is NOT a scalar
Force
What is the unit of measurement for angular velocity?
Radians per second (rad/s)
A car with a mass of 500 kg is traveling at a velocity of 20 m/s. What is the momentum of the car?
10,000 kg⋅m/s
What is energy that is stored because of an object's position or height above the Earth's surface?
Gravitational Potential Energy
Starting from rest, how long does it take for a sports car to reach 60mi/h, if it has an average acceleration of 13.1 mi/h*s?
4.6 seconds
A book whose mass is 2 kg rests on a table. What is the magnitude of the force exerted by the table on the book?
20 N
What is a measure of an object's resistance to rotational motion?
Rotational Inertia
Daniel Garcia tried to run away from momentum to get away from it but couldn't do it. What is the only way that he can get rid of momentum?
He has to have 0 velocity
A car with a mass of 1000 kg is traveling at a velocity of 20 m/s. What is the kinetic energy of the car?
200,000 J
How far does a car travel in 10s when it accelerates uniformly in one direction from 5 m/s to 30 m/s?
175 m
A box is pushed with a force of 50 Newtons across a frictionless surface. If the mass of the box is 10 kilograms, what is its acceleration?
5 m/s^2
What is the rate of change of angular position of a rotating body.
Angular velocity
A freight train rolls along a track with considerable momentum. What is its momentum if it rolls at the same speed but has twice the mass?
It is doubled
A 10 kg box is lifted to a height of 5 meters above the ground. What is the gravitational potential energy of the box?
490 J
On a planet where the acceleration due to gravity is 20m/s^2, how much does a freely falling object increase its speed each second by about?
20 m/s
What is the tension force on a wire holding a 10kg ball 20ft above the ground, if the ball is not moving at that height?
98 N
Angular momentum cannot be conserved if the?
System has a net torque
The relationship between impulse and impact force involves the?
The time the force acts
An upward force is applied to lift a 20kg bag a to a height of 5m. The bag is lifted at a constant speed. What is the work done on the bag?
1000 J
A projectile is fired horizontally from 20 meters above the ground, with an initial velocity of 7 m/s. How far does the projectile travel horizontally before it reaches the ground?
14 m
Two objects of equivalent mass are attached with a very strong rope that goes through a pulley. The masses are left to hang. What will happen?
The masses will remain motionless.
Through what angle, in degrees, does a 33 rpm record turn in 0.32 seconds?
63 degrees
A 480kg car is moving at 14.4 m/s when it collides with another car that is moving at 13.3 m/s in the same direction. If the second car has a mass of 570 kg and a new velocity of 17.9 m/s after the collision, what is the velocity of the first car after the collision?
9 m/s
A 50kg man pushes against a wall with a force of 100N for 10 seconds. How much work does the man accomplish?
0 J