Force and Motion

What is the formula to calculate speed?

• S=t/d

• S=d/t

• S=d*t

• S=d*t

What is the speed of a car that travels 400 m in 20 minutes?

• 20 miles/hr
• 20 m/min
• 800 m/min
• 200 miles/hr

How far will a person go if they jog for 2 hours at a speed of 12 km/hr?

• 6 km
• 0.5 km
• 10 km
• 24 km

A runner races in the 100 meter dash.  It takes her 10 seconds to finish.  What is her average speed?

• 10 m/s
• 1000 m/s
• 100 seconds
• 10 seconds

A cyclist travels at an average speed of 25 km/h. How long will it take to travel a distance of 125 km?

• 10 hours

• 2 hours

• 5 hours

• 15 hours

A train travels at a speed of 90 km/h. How long will it take to travel a distance of 270 km?

• 10 hours

• 5 hours

• 1 hour

• 3 hours

 

An object at rest begins to move to a final speed of 20 m/s in 5 seconds. Calculate the object's acceleration.

• 4 m/s²

• -4 m/s²

• 100 m/s²

• 0.25 m/s²

 

A train travels at a constant acceleration of 6 m/s2, starting from standstill at a station and traveling along a straight track. How long does it take the train to reach 72 m/s?

• 12 s

• 12 m/s

• 432 s

• 432 m/s²

Mark slams on the brakes after traveling 25 m/s. It takes him 3 seconds to come to a complete stop. What is his acceleration?

• 8.33 m/s²

• -8.33 m/s²

• 75 m/s²

• -75 m/s²

How much time did it take Matthew to slow down to a complete stop, after traveling at 30 m/s. His acceleration is -12 m/s²

• 2.5 s

• 360 s

• .4 s

• -2.5 s