Question

Part Description Answer Chk History Can the average velocity ever be greater than the average speed? 4.4 pts, 110% 1. Yes 2. No 3. Depends on situation # tries: 0 show Details 33% try penalty Hints: 0.0 A car has a velocity of -45 ft/s and an acceleration of +3.7 ft/s2. The car is 4.4 pts. 110% B. # tries: 0 show Details 1. speeding up 2. slowing down 33% try penalty 3. moving at constant velocity Hints: 0,0 You run around Neyland Stadium. When you are halfway around the stadium, which value cannot be 0? 4.4 pts, 110% 1. Instantaneous speed 2. Average speed 3. Instantaneous acceleration 4. Average acceleration # tries: 0 show Details 25% try penalty Hints: 0,0 The slope of the velocity-time graph is the: 1. Instantaneous acceleration 2. Average acceleration 3. Position 4. Change in position 4.4 pts. 11096 # tries: 0 Show Details 25% try penalty Hints: 0,0

Answer 1

1) No, displacement is always less than or equal to distance

2) Slowing down, because velocity and acceleration have different signs

3) average speed, because distance is not zero

4) instantaneous acceleration

5) change in position

6) 90, (30 + v)/2 =60 => v = 90