Kinematic Equations

A car is traveling to the right with a speed of 29​​m/s when the rider slams on the accelerator to pass another car. The car passes in 110 m with constant acceleration and reaches a speed of 34m/s. We want to find the acceleration of the car as it sped up. What equation should you choose?

• v=v_o+at

• d=v_ot+1/2at²

• v²=v_o²+2aΔx

• d=1/2(v+v_o)t

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

Tags

NGSS.HS-PS2-1

Kinematic equation can only be used when you have a constant ....

• Position

• Velocity

• Acceleration

• Time

Tags

NGSS.HS-PS2-1

The unit we use to measure acceleration is ___.

• m/s

• m

• s

• m/s²

Tags

NGSS.HS-PS2-1

A car starts from rest and accelerates uniformly over a time of 5.21 seconds for a distance of 110 m. Determine the acceleration of the car. Choose the appropriate equation.

• v=v_o+at

• d=v_ot+1/2at²

• v²=v_o²+2aΔx

• d=1/2(v+v_o)t

Rocket-powered sleds are used to test the human response to acceleration. If a rocket-powered sled is accelerated to a speed of 444 m/s in 1.83 seconds, then what is the distance that the sled travels?

Choose the appropriate equation.

• v=v_o+at

• d=v_ot+1/2at²

• v²=v_o²+2aΔx

• d=1/2(v+v_o)t

An engineer is designing the runway for an airport. Of the planes that will use the airport, the lowest acceleration rate is likely to be 3 m/s². The takeoff speed for this plane will be 65 m/s. All airplanes will start from rest. Assuming this minimum acceleration, what is the minimum allowed length for the runway?

• v=v_o+at

• d=v_ot+1/2at²

• v²=v_o²+2aΔx

• d=1/2(v+v_o)t

The unit we use to measure speed is ___.

• m/s

• m

• s

• m/s²

Tags

NGSS.MS-PS3-1

The unit we use to measure distance is ___.

• m/s

• m

• s

• m/s²

The unit we use to measure time is ___.

• m/s

• m

• s

• m/s²