The back shelf of a car has a physics textbook on it. the coefficient of static friction of 0.44 between the book and the surface. if the car is initially moving at a speed of 16 m/s, in how short a distance can the car be stopped at constant acceleration without causing the book to slide forward (and hit the driver in the back of the head)? (this is why you should never keep packages on the back shelf of your car.)

To run the physics cart, the fan speed of the cart is manipulated. this is the (blank) variable. the cart accelerates due to the speed of the fan. acceleration is therefore the (blank) variable. a “constant” is a parameter that stays the same regardless of the variables. one parameter of the cart that is held constant is the (blank) .

The image shows a pendulum in simple harmonic motion the pendulum starts at a and swing to e

Mutt and jeff are running along a path each pushing a cart loaded with rocks. if mutt's wagon has a mass two times greater than jeff's and they want to stay together, arriving at their destination at the same time, what must happen? a) jeff should slow down so mutt can catch up. b) mutt must use half as much force to push his cart. c) mutt must use twice as much force to push his cart. d) mutt and jeff will use the same force, but mutt will take bigger steps.