Kinematics Review

While taking off from an aircraft carrier, a jet starting from rest accelerates uniformly to a final velocity of 40. meters per second on a runway that is 70. meters long. What is the magnitude of the acceleration of the jet?

• 1.8 m/s²

• 11 m/s²

• 0.57 m/s²

• 0.29 m/s²

A 6.0-kilogram cart initially traveling at 4.0 meters per second east accelerates uniformly at 0.50 meter per second squared east for 3.0 seconds. What is the speed of the cart at the end of this 3.0 second interval?

• 7.0 m/s

• 5.5 m/s

• 1.5 m/s

• 3.0 m/s

Starting from rest, a car travels 18 meters as it accelerates uniformly for 3.0 seconds. What is the magnitude of the car’s acceleration?

• 6.0 m/s²

• 3.0 m/s²

• 2.0 m/s²

• 4.0 m/s²

A unit used for a vector quantity is

• second

• meter + direction

• meter

• kilogram

A displacement vector with a magnitude of 20. meters could have perpendicular components with magnitudes of

• 12 m and 16 m

• 10. m and 10. m

• 12 m and 8.0 m

• 16 m and 8.0 m

A hiker travels 1.0 kilometer south, turns and travels 3.0 kilometers west, and then turns and travels 3.0 kilometers north. What is the total distance traveled by the hiker?

• 3.2 km

• 5.0 km

• 3.6 km

• 7.0 km

A ball slows from 6 m/s East to 2 m/s East in 4 s. The acceleration of the ball is

• 2 m/s² East

• 2 m/s² West

• 1 m/s² East

• 1 m/s² West

Tags

NGSS.MS-PS2-2

A boat accelerates at 3m/s² from 5m/s east to 10m/s east. What was the displacement?

• 12.5 m east

• 4m east

• 12.5

• 4m

A motorbike accelerates from rest at 2m/s² . How long does it take to travel 100m?

• 14.14m/s

• 100s

• 10s

• 0.1s