qz3A - Test 1 Review

A runner races in the 100 meter dash.  It takes her 10 seconds to finish.  What is her average speed?

• 10 m/s
• 1000 m/s
• 100 seconds
• 10 seconds

After the starting bell rings, a runner takes off, accelerating at 2 m/s². After 10 seconds, how fast would she be going?

• 20 m/s
• 20 m/s² 
• 0.2 m/s
• 0.2 m/s²

Joanna drives for 400km at an average speed of 80km/h. How long was her journey?

• 5 hr
• 320 hr
• 480 hr
• 0.4 hr

If you are at rest, what is your speed?

• zero
• increasing
• decreasing
• halving

Tags

NGSS.MS-PS3-1

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

Choose all that are correct

• m = ___ kg

• KE = __ J

• W = ___ N

• Wt = ____ kg

• h = _____m

Choose all that are correct

• v = _____ m/s²

• g = - 9.8 m/s²

• F = _______ N

• PE = ______ N

• d = _____ m/s

Choose all that are correct

• v = _______ m/s

• W = _______ J

• mass = _______ m

• Weight = _______ N

• P = _______ J

If the problem says you have constant velocity, what do you put in the givens?

• t=0 seconds
• v_i = 0 m/s
• v_f = 0 m/s
• a = 0 m/s²

If the problem says you come to a stop, what do you put in the givens?

• t=0 seconds
• v_i = 0 m/s
• v_f = 0 m/s
• a = 0 m/s²