Unit 1d Practice Test – Study Guide

This is a practice test. It is very similar to the actual test. If you do not work every single problem and convince yourself that you have the right answer, then you are doomed to fail.
Also, you will have to make your own formula sheet as I will not be providing you with one for the test.

  1. A projectile is fired from the ballistic pendulum apparatus, traveling 3 meters in 0.5 seconds. What is the velocity of the projectile?
  1. A satellite re-entering the Earth’s atmosphere is traveling at 10,000 m/s. After 1 min, it is 5,000 m/s. what is the satellite’s acceleration?
  1. Calculate momentum of a 136-kg defensive linemanmoving at a speed of 7 m/s.
  1. Calculate the momentum of a 80-kg cornerback moving at a speed of 10 m/s.
  1. Who has more kinetic energy, the lineman or the cornerback?

Match the measurement with their standard units

  1. Height, distance
/
  1. Meters (m)

  1. Time
/
  1. Seconds (s)

  1. Mass
/
  1. Kilograms (kg)

Match the named units on the left with the standard units on the right

  1. Newton
/
  1. kg*m/s2

  1. Joule
/
  1. N*m

  1. Watt
/
  1. N*m/s

Usethe “Distance-Time for Runners” graph to answer questions 1213.

  1. Who had the fastest instantaneous speed?
  2. Sally
  3. Alonzo
  4. They had the same instantaneous speed.
  5. Who had the fastest average speed?
  6. Sally
  7. Alonzo
  8. They had the same average speed.
  1. Write two observations about the situation illustrated at right.
  1. Write one inference about the situation illustrated at right.
  1. Write a hypothesis to test your inference.
  1. If your mass is 75 kg, what is your weight?
  1. At a height 3 meters, a 4-kg metal ball is moving at a speed of 5 m/s. How much Kinetic Energy does the ball have?
  1. At a height 3 meters, a 4-kg metal ball is moving at a speed of 5 m/s. How much Gravitational Potential Energy does the ball have?
  1. At a height 3 meters, a 4-kg metal ball is moving at a speed of 5 m/s. What is the Total Mechanical Energy of the ball?
  1. It takes 50 Newtons to push a box across the floor at a constant velocity. How much work is required to push the box 5 meters?
  1. Mr. A pushes a desk of mass 15 kilograms with a force of 200N for a distance of .5meters. What is the speed of the desk when it leaves Mr. A’s hands?
  1. How much power is required to lift a 75 kg man 1 meter in the air in 1 second?
  1. State the above answer in units of horsepower.
  1. Given the force verses pull back distance graph for a recurve bow, determine the velocity of an arrow (mass = 0.02kg) leaving the bow after being released from a pullback distance of 0.5 meters.
  1. A bullet is dropped at the same height and at the same time as a similar bullet is fired from a gun. Which will hit the ground first and why?
  1. A bullet is fired horizontally above the ground (h = 2 m) at a velocity of 800 m/s. How much time will it take the bullet to hit the ground?
  1. A bullet is fired horizontally above the ground (h = 2 m) at a velocity of 800 m/s. How far will the bullet travel?
  1. Give two examples of a situation explained by Netwton’s First Law
  1. Give two examples of a situation explained by Netwton’s Second Law
  1. Give two examples of a situation explained by Netwton’s Third Law

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