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1. A space shuttle is traveling at a speed of 7,700 m/s.  How far does the shuttle travel in km/hr?  At an altitude of 300 km, the circumference of the shuttle’s orbit is 42 million meters.  How long does it take to go around the Earth one time?

2. Sam rolls down his driveway on a skateboard while Beth keeps track of his position every second for 15 s.  When they make a graph of the data, the best fit line for the position vs. time graph is a curved line.  What does this indicate about Sam’s speed?

3. The sound from an underwater explosion is recorded by sailors on a submarine 4.80 X 10³ m away 3.2 s after the explosion occurs.  According to their data, what is the speed of sound in water?

4. If it takes 8.3 minutes for the light from the sun to reach the Earth, what is the distance to the sun in meters? 

5. A ball rolls at 2 m/s onto a ramp.  The angle of the ramp creates an acceleration of 0.75 m/s².  Calculate the speed of the ball 10 s after it reaches the ramp.

6. The ball then rolls onto another ramp that is angled uphill.  It is rolling at 2 m/s. The uphill angle creates an acceleration of -0.5 m/s².    How far up the ramp does the ball get at its highest point? 

7. A stone is dropped down a well and it takes 1.6 s to reach the bottom.  How deep is the well?

8. An airplane needs to accelerate at 5 m/s² to reach take-off speed before reaching the end of the runway.  The mass off the airplane is 5,000 kg.  How much force is needed from the engine?

9. What is the difference between force and net force?

10. You and your 6 year old cousin are wearing ice skates.  You push off each other and move in opposite directions.  How does the force you feel during the push compare to the force your cousin feels?  How do your accelerations compare?

11. A 50 kg woman wearing a seat belt is traveling in a car that is moving with a velocity of 10 m/s.  In an emergency, the car is brought to rest in 0.50 s.  What force does the seat belt exert on the woman so that she remains in her seat?

12. How much would a person who weighs 490 N on Earth weigh on Jupiter?  The value of g at the top of Jupiter’s atmosphere (weigh from there) is 23 m/s². 

13. An airplane is moving at a velocity of 100 m/s in a direction 30 degrees NE relative to the air.  The wind is blowing 40 m/s in a direction 45 degrees SW relative to the ground. Find the resultant velocity of the airplane relative to the ground. 

14. A football is kicked at a speed of 10 m/s at an angle of 70 degrees from the ground.  Find the horizontal and vertical components of the ball’s initial velocity.

15. A pilot wants to fly directly to the west.  The engine pushes the plane at 100 m/s, and there is a crosswind blowing to the south at 30 m/s.  Determine the exact angle at which the pilot should head.