Equations Of Motion

A  car starts from rest and after  7 seconds it is moving at 42  m/s. What is the car’s acceleration?

• 0.17
• 1.67
• 6
• 7

A car accelerates at 2 m/s². Assuming the car starts from rest, how much time does it need to accelerate to a speed of 16 m/s?

• 4 s
• 8 s
• 16 s
• 1/16 s

A car is traveling at 21.0 m/s. It slows to a stop at a constant rate over 5.00 s. How far does the car travel during those 5.00 seconds before it stops? 

• 4.20 m
• 52.5 m
• 105 m
• 158 m

A car accelerates from a standstill to 70 m/s in 10 seconds.  What is the acceleration?

• 0.7m/s²
• 7m/s²
• 14m/s²
• none of the above

A roller coasters accelerates from an initial velocity of 6.0 m/s to a final velocity of 70 m/s over 4 seconds.  What's the acceleration?

• 24 m/s²
• 18 m/s²
• 16 m/s²
• 16 m/s

A golf ball starts with a speed of 2 m/s and slows at a constant rate of 0.5 m/s², what is its velocity after 2 s?

• 0 m/s
• 0.5 m/s
• 1 m/s
• 1.5 m/s

A dog runs with an initial speed of 7.5 m/s to a stop in 15 seconds.  What is the dog's acceleration?

• -7.5 m/s
• -7.5 m/s²
• -0.5 m/s²
• 7.5 mi//hr

A car is traveling at 21.0 m/s. It slows to a stop at a constant rate over 5.00 s. How far does the car travel during those 5.00 seconds before it stops? 

• 4.20 m
• 52.5 m
• 105 m
• 158 m

An airplane accelerates down a runway at 3.20 m/s² for 32.8 s until is finally lifts off the ground. Determine the distance traveled before takeoff.

Which equation is appropriate?

• v_f=v_i+at

• Δx=v_it+1/2at²

• v_f²=v_i²+2aΔX

• Δx=((v_f+v_i)/2)t

Kinematic equations (aka Equations of uniform motion) can only be used when you have a constant ....

• Position

• Velocity

• Acceleration

• Time