1D Motion

Velocity is...

• Change in position/Change in acceleration

• Δx/ΔT

• Velocity/Time

• ΔTime/ΔPosition

Acceleration is...

• Time/Position

• Change in Position/Change in Time

• ΔV/ΔT

• Position x Velocity

39 m/s could be...

• velocity (v or v_o)

• acceleration (a)

• time (t)

• change in position (Δx)

It is 2.5 miles from Peter's house to the gas station. It takes him 0.5 hours to get there. What is his velocity?

• .5 mph

• 1 mph

• 2.5 mph

• 5 mph

Eliud Kipchoge ran a marathon (26.2 miles) in 1.99 hours. What was his average speed?

• 24.21 mph

• 52.14 mph

• 13.16 mph

• 0.076 mph

How long would it take Kipchoge to run 1 mile if his speed was a constant 13.2 miles per hour?

• .16 hours (9 minutes 16 seconds)

• .076 hours (4 minutes 32 seconds)

• .032 hours (5 minutes 12 seconds)

• .067 hours (4 minutes 0 seconds)

Jayla drops an egg off of a tower. The egg accelerates at 9.8 m/s². What is the egg's velocity 3.26 seconds later?

• 3.00 m/s

• 6.54 m/s²

• 31.95 m/s

• 13.06 m

A motorcycle sits at the starting line (v_o=0). When the light turns green, the motorcycle takes off. 10.5 seconds later, the motorcycle crosses the finish line 400 meters away. What was the motorcycle's final velocity?

• 76.2 m/s

• 38.1 m/s

• 0.026 m/s

• 410.5 m/s

A F104 jet is flying along at a steady speed. It accelerates at 4.9 m/s² for 3 seconds. During this time, it travelled 772.05 m. What was the inital velocity (v_o)?

• 500 m/s

• 125 m/s

• 350 m/s

• 250 m/s

Mr. Shober moves his pen across the board at 0.45 m/s. He notices class is almost over so he increases his speed to 0.60 m/s. He does this in the space of 1.8 m. What was his acceleration?

• 0.042 m²/s

• 0.075 m/s²

• 0.036 m/s²

• -0.036 m/s²