Based on the velocity-time graph given, the acceleration of the object is.. a. 3.0 m/s^2
b. 2.0 m/s^2
c. -2.0 m/s^2
d. 2.1 m/s^2

After a car's engine has been running for a while, if you stand near the car's engine you can often feel heat coming from the engine as a result of a. radiation b. convection c. conduction

If you touch a hot light bulb and get burned, that is an example of a. radiation b. convection c. conduction

20. threshold braking in the vehicle's braking system occurs when a. the brake pedal is pushed, heel on floorboard, with full foot pressure. b. the brakes are exerting full braking power, without traction loss. c. the driver begins pushing down the brake pedal, with moderate slowdown. d. the brakes just begin to take hold with a gradual slowdown.