A1.6 kg ball at the end of a 1.1 m string swings in a vertical plane. at its lowest point the ball is moving with a speed of 17 m/: s (a) what is its speed (in m/s) at the top of its path? 4.64 xm/s (b) what is the tension (in n) in the string when the ball is at the bottom and at the top of its path? bottom of its path 436.04 top of its path

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.

If an astronaut takes an object to the moon the following is true (choose only one). a the mass will change but the weight will be the same. b both the mass and the weight of the object will be the same. c the weight will change but the mass will be the same. d both the mass and the weight of the object will change.

Why are graphs useful when interpreting data