Linear motion

This is a velocity-time graph.  What is the object doing in segment A?

• Positive acceleration
• Negative acceleration
• Constant Velocity
• Not moving

What is the name for the type of quantity that has only magnitude (size)?

• Scalar

• Vector

How far will a car move in 5 seconds if it started from rest and accelerates uniformly at 2.5 ms^-2?

• 12.5 m
• 125 m
• 6.25 m
• 31.25 m

A dog basks in the sun when he sees a squirrel and bolts after it. If the dog accelerates at +1.6 m/s², how far does he run in 3 seconds?

• 4.8 meters

• 45 meters

• 1.6 meters

• 7.2 meters

If a car is traveling forward at 15 m/s, how fast will it be going in 1.2 seconds if the acceleration is -10 m/s²?

• 27 m/s
• 3 m/s
• -27 m/s
• -3 m/s

An airplane accelerates down a runway at 4 m/s² for 24 s until is finally lifts off the ground. Determine the distance traveled before takeoff?

• 1152m

• 2304m

• 48m

• 1000m

An airplane take s 5s to lift off on a runway, it's launch speed is 300m/s, how long is the runway? (first find the acceleration)

• 18325

• 2025

• 3025

• 2100

During which interval is the object not moving?

• B to C
• C to D
• D to E
• only at point A

During which interval is the object speeding up?

• A to B
• B to C
• D to E
• E to F

Which runner won the race?

• Albert
• Bob
• Charlie