6.3 Calculating Acceleration

 $a=\frac{\Delta\upsilon}{t}$  

An object at rest begins to move to a final speed of 20 m/s in 5 seconds. Calculate the object's acceleration.

• 4 m/s²

• -4 m/s²

• 100 m/s²

• 0.25 m/s²

 $t=\frac{\Delta v}{a}$  

A train travels at a constant acceleration of 6 m/s2, starting from standstill at a station and traveling along a straight track. How long does it take the train to reach 72 m/s?

• 12 s

• 12 m/s

• 432 s

• 432 m/s²

Tags

NGSS.HS-PS2-1

Mark slams on the brakes after traveling 25 m/s. It takes him 3 seconds to come to a complete stop. What is his acceleration?

• 8.33 m/s²

• -8.33 m/s²

• 75 m/s²

• -75 m/s²

Tags

NGSS.HS-PS2-1

How much time did it take Matthew to slow down to a complete stop, after traveling at 30 m/s. His acceleration is -12 m/s²

• 2.5 s

• 360 s

• .4 s

• -2.5 s

Tags

NGSS.MS-PS2-2

If Anthony was running for 300 s after starting at rest, what was his final velocity if he had an acceleration of 0.05 m/s²

• .25 m/s

• .01 m/s

• 100 m/s

• 15 m/s

Tags

NGSS.MS-PS2-2

Mars’ gravitational force is less than that of Earth’s . If an astronaut drops a hammer and its speed increases from 0 to 15 m/s in 4.04 s, what is the acceleration due to gravity on Mars?

• 9.8 m/s²

• 0.269 m/s²

• 60.6 m/s²

• 3.71 m/s²

Tags

NGSS.MS-ESS1-2

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.MS-PS2-2

A car starts from rest at a stop light and reaches 20 m/s in 3.5 s. Determine the acceleration of the car.

• 2.2m/s²
• 7.0m/s²
• 5.7m/s²
• 70m/s²

Tags

NGSS.MS-PS2-2

Georgia is jogging with a velocity of +4 m/s when she accelerates at +2 m/s² for 3 seconds. How fast is Georgia running now?

• 10 m/s

• 2.6 m/s

• 9 m/s

• 3.5 m/s

Pete is driving down 7th street. He drives 150 meters in 18 seconds. Assuming he does not speed up or slow down, what is his speed in meters per second?

• 8.3 m/s

• 150 m/s

• 18 m/s

• 1,200 m/s