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Kinematics
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100
50.0 Kilometers is how many meters?
50,000 meters
100
What do each of the following letters stand for? A) m= B) v= C) g= D) P= E) J= (2 things)
A) m= mass B) v= velocity C) g= gravity D) P= Momentum E) J= Impulse and Joules
100
What is the difference between a vector and a scalar?
A vector has magnitude/size AND direction A scalar has only magnitude/size
100
Find the velocity of a bee traveling 20 meters in 4 seconds:
5 m/s
100
Find the energy in a spring that was compressed from 2 meters to .5 meters in length. The spring constant is 5 N/m.
Answer: 18.75 Joules
200
One meter is how many centimeters?
100 centimeters
200
What is the difference between an Elastic collision and an Inelastic Collision?
Answer: Elastic Collisions: Momentum is conserved, no Kinetic energy is lost; Kinetic energy is conserved. Ex: Billiard ball Inelastic Collisions: Momentum is still conserved, but Kinetic energy is lost. Ex: Car Crash
200
Of the following, which are vector quantities: a) Velocity b) Distance c) Time d) Displacement e) Acceleration
Answer: a, d, e
200
Here comes a Ferrari! It zoomed past me going 50 m/s and then quickly changed pace to 100 m/s! It took a total of 5 seconds for this to happen. What was the Ferrari's average acceleration during that time?
Answer: 10 m/s^2
200
What is the momentum of a car with a mass of 200 kg driving down the road at 10 m/s?
Answer: 2,000 (kg)m/s
300
There were 30 Watts of Power used by a light bulb over a period of 15 seconds. How much work was done during this time period?
450 Joules
300
Solve for x: 8= x/4
x= 32
300
Two people are pushing on a disabled car. One exerts a force of 300 N east, and the other a force of 100 N east. What is the net force exerted on the car? (Assume friction to be negligible.)
Answer: 400 N East
300
A toucan pushes a mouse with a force of 3 N. The mass of the mouse was .10 kg. With what acceleration did the mouse get pushed?
30 m/s^2
300
A horizontal line on a velocity/time graph shows ________ acceleration a) zero b) positive c) changing d) negative
a) zero
400
Convert 2,000,000.0 into scientific notation:
2.0 x 10^6
400
Solve for x: (2x-5)/3 = 15
x= 25
400
If a soccer ball was placed between two soccer players, and they both kicked at the same time- Player A with a force of 30 N East and Player B with a force of 45 N West, what would the resulting net force on the soccer ball be?
Answer: 15 N West
400
30 Joules of Work was done pushing a football player 20 meters up an inclined hill 33 degrees above the horizontal. With what force was the football player pushed?
Answer: 1.7885 N
400
The impulse of a rocket is 100 N*s while having had its jets on with a force upon it of 20 N. How long were its jets on?
5 seconds
500
A 20 kg rock was sitting at the top of a very tall hill (Height = 100 meters). Find the Potential Energy of the rock. (Note: The acceleration of gravity is 9.8 m/s^2).
19,600 Joules
500
Solve for x: 0=2x + (4/2)
x= -1
500
Fill in the blank: The higher the temperature, the __________ the molecules will move.
Faster
500
The Kinetic energy of a dancer was 80 Joules. The dancer has a mass of 20 kg. What is the dancers' velocity?
2.82 m/s
500
Two ice skaters are enjoying their day skating in the mall. Then, Lauren (mass= 100 kg) decided to push her sister Arielle (mass= 80 kg) just to be a jerk. Arielle travels back with a velocity of 4 m/s. Find the velocity of Lauren:
-3.20 m/s