Recent content by hcps-chent1

Homework Statement A(n) 0.182 kg baseball is thrown with a speed of 15.3 m/s. It is hit straight back at the pitcher with a final speed of 10.4 m/s. What is the magnitude of the impulse delivered to the ball? Homework Equations impulse=mass*change of velocity The Attempt at a Solution...

never mind solve it

ok i did try i still don't get it

Homework Statement An acrobat on skis starts from rest 50.0 m above the ground on a frictionless track and flies off the track at a 45.0° angle above the horizontal and at a height of 10.0 m. Disregard air resistance. a. What is the skier’s speed when leaving the track? b. What is the...

thanks

what?

got a and b now what about c

Homework Statement A mechanic pushes a 3703 kg car from rest to a speed of v, doing 6563 J of work in the process. During this time, the carmoves 22m. a)Neglecting friction between the car and the road, find v. b)Find the horizontal force exerted on the car. Homework Equations no...

Homework Statement A 2436 kg car has a speed of 10.7 m/s when it hits a tree. The tree doesn’t move and the car comes to rest. a) Find the change in kinetic energy of the car. b) Find the amount of work done by the car as its front is pushed in. c) Find the magnitude of the force that...

Homework Statement A 2.7 kg block initially at rest is pulled to the right along a horizontal, frictionless surface by a constant, horizontal force of 17.3 N. Find the speed of the block after it has moved 4 m. Answer in units of m/s. Homework Equations a=Fnet/mass The Attempt at...