Motion

free fall is?

• falling and the only thing acting on you is air resistance
• falling and the only force acting on you is gravity

Tags

NGSS.HS-PS2-4

If you throw a baseball straight up, what is its acceleration at the highest point?

• 9.8 m/s² downward
• 9.8 m/s² upward
• 0 m/s²

Tags

NGSS.HS-PS2-1

If you throw a baseball straight up, what is its velocity at the highest point?

• 9.8 m/s²
• 9.8 m/s
• 0 m/s²
• 0 m/s

Tags

NGSS.HS-PS2-1

The rate at which velocity changes is called 

• motion
• average speed
• instantaneous speed
• acceleration

Tags

NGSS.HS-PS2-1

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.HS-PS2-1

initial v=5 m/s, final v=0 m/s, time is 20 seconds, how do you calculate the acceleration?

• (0-5)/20
• (5-0)/20
• 5/20
• 20/(5-0)

Tags

NGSS.HS-PS2-1

A car accelerates from a standstill to 70 m/s in 10 seconds.  What is the acceleration?

• 0.7m/s²
• 7m/s²
• 14m/s²
• none of the above

Tags

NGSS.HS-PS2-1

Find the initial velocity of an object that accelerated for 10 seconds at 5 m/s² and had a final velocity of 70m/s.

• 0 m/s
• 10 m/s
• 20 m/s
• 50 m/s

Tags

NGSS.HS-PS2-1

Which line(s) show the object speeding up (accelerating) for at least some part of the time in the graph? 

• pink, blue, and green
• green and red
• pink and orange
• only pink

According to the graph, the total distance traveled is ____ and the net displacement is ____. 

• 10 m; 10 m
• 0 m; 10 m
• 1 m/s; -2 m/s
• 10 m; 0 m