Equations of Motion

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

Tags

NGSS.MS-PS2-2

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

• Position

• Velocity

• Acceleration

• Time

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

Tags

NGSS.MS-PS2-2

As an object is thrown up, If up is considered positive and down is considered negative, what is the direction of the velocity and acceleration of the object as the object travels up?

• Velocity: + Acceleration: -

• Velocity: + Acceleration: -

• Velocity: - Acceleration: +

• Velocity: - Acceleration: -

Tags

NGSS.MS-PS2-4

An baseball is thrown straight up into the air at 5 m/s. If you wanted to determine how long it took the ball to reach its highest point, which equation could you use?

A car accelerates from 60 m/s to 35 m/s and travels 100 m during that time. IF you wanted to determine the acceleration of the car, which equation could you use?

Tags

NGSS.HS-PS2-1

If a rocket sled starts from rest, how far does it go if it accelerates at 45 m/s² for 3.0 s?

• 15 m

• 135 m

• 5.0 m

• 202.5 m

Tags

NGSS.MS-PS2-2

A ship starts out moving at 14 m/s. It catches a breeze that accelerates it at 0.80 m/s² for 25 s. How fast is it moving at the end of the 25 s?

• 34 m/s

• 20 m/s

• -6 m/s

• 11.2 m/s

Tags

NGSS.MS-PS2-2

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

• 0.17 m/s²

• 1.67 m/s²

• 6 m/s²

• 7 m/s²

Tags

NGSS.MS-PS2-2

A boat travels 12.0 m while it reduces its velocity from 9.5 m/s to 5.5 m/s. What is the magnitude of the boat’s acceleration while it travels the 12.0 m?

• 1.3 m/s²

• 2.5 m/s²

• 3.0 m/s²

• 7.5 m/s²