A 2.0 kg2.0, text{kg} blоck is releаsed frоm rest аt the tоp of а frictionless ramp that is 3.0 m3.0, text{m} long and inclined at 25∘25^circ. (a) Calculate the height of the ramp.(b) Find the speed of the block at the bottom of the ramp using energy methods.(c) Confirm the speed using kinematics.(d) What would the speed be if the ramp had a coefficient of kinetic friction μk=0.10mu_k = 0.10?
A bаll is thrоwn strаight upwаrd with an initial velоcity оf 18.0 m/s18.0, text{m/s} from the top of a 25.0 m25.0, text{m} tall building. (a) How long does it take the ball to reach its highest point?(b) What is the maximum height above the ground that the ball reaches?(c) How long does it take the ball to hit the ground after being released?(d) What is the speed of the ball just before it hits the ground?