H Physics Midterm Review

Motion sensors recorded the following data about a runner during a cross-country race. During which segment of the race did the runner have the greatest speed?

• W
• X
• Y
• Z

What is the acceleration of an object moving at constant velocity?

• 2 m/s²

• 1 m/s²

• 0 m/s²

• 0.8 m/s²

An airplane lands on a runway with a velocity of 150 m/s. How far will it travel until it stops if its rate of deceleration is constant at -3 m/s²?

• 525 m
• 3750 m
• 6235 m
• 9813 m

A ball is thrown downward from the top of a roof with a speed of 25 m/s. After 2 s, its velocity will be:

• 19.6 m/s
• -5.4 m/s
• -44.6 m/s
• 44.6 m/s

What is the net force?

• 20 N 

• 0 N 

• 400 N 

• 40 N 

A net force of 15 N is exerted on an encyclopedia to cause it to accelerate at a rate of 5 m/s2. Determine the mass of the encyclopedia?

•  m = 3.0 kg
• m = 4.0 kg 
• m = 3.0 ml 
• m = 30.0 g

What law of motion does this picture represent?

• Newtons 3rd law
• Newtons 4th law
• Newtons 1st law
• Newtons 2nd law 

What is the net force?

• 3 N

• 3 N, right

• 17 N, right

• 3 N, left

What does the strength of gravity between two objects depend upon?

• Mass & distance
• Mass & weight
• Gravity & inertia
• Inertia & mass

A leftward force is applied to a crate to push it across the floor at a constant speed. Which is the correct force diagram?

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