Kinematic Equations

Which of the below kinematic equations is correct?

Tags

NGSS.HS-PS2-1

A car starts at rest and accelerates to a velocity of 26.8 m/s in 9.6 s. What was its acceleration?

• 257 m/s²

• 104 m/s²

• 2.79 m/s²

• 0.36 m/s²

Kaley hits a ball with her field hockey stick. If the ball starts at rest and accelerates at 12.4 m/s² for 2 s, what is its final velocity?

• 24.8 m/s²

• 6.2 m/s²

• 2 m/s²

• 0.16 m/s²

Tags

NGSS.MS-PS2-2

A dog walking to the right at 1.5 m/s spies a cat ahead, and begins chasing the cat with a constant acceleration of 12 m/s². What is the dog's velocity after traveling 3 m?

• 4.5 m/s

• 8.6 m/s

• 74.25 m/s

Tags

NGSS.HS-PS2-1

A golf ball accelerates off a tee at 15m/s², changing its velocity from 0m/s to 50 m/s down the fairway. How long did it take the golf ball to accelerate?

• 750 seconds

• 35 seconds

• 0.3 seconds

• 3.3 seconds

Tags

NGSS.HS-PS2-1

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 drag racer accelerated from 0 m/s to 200 m/s in 5 s.  What was the acceleration?

• 0 m/s

• 40 m/s²

• -40 m/s²

• 40 m/s

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

A cannonball is fired with an initial velocity of 100. meters per second at an angle of 15.0° above the horizontal. What are the horizontal (v_x) and vertical (v_y) components of this velocity?

• 25.9 m/s

• 99.6 m/s

• 76.0 m/s

• 65.0 m/s

Tags

NGSS.MS-PS3-1

A jetboat is drifting with a speed of 5 m/s to the right when the driver turns on the motor. The boat speeds up for 6 s with an acceleration of of 4.0 m/s². What is the displacement of the boat from the position when the motor was turned on?

• 102 m

• 72 m

• 30 m

What are these 4 equations called?

• Velocity Equations

• Acceleration Equations

• Kinematic Equations

• Kinetic Equations

Answer explanation

The four equations describe the motion of objects under constant acceleration, relating displacement, velocity, and time. They are specifically known as Kinematic Equations, which are fundamental in physics for analyzing motion.