Question

5.-(10 Points) Suppose you are trying to help your dog get to the top of a frictionless ramp 2.00 m long and inclined 30° upward at above the horizontal. Her mass is 7 kg.Since the poor dog can't get any traction on the ramp, you push her up the entire length of the ramp by exerting a constant 100-N force parallel to the ramp. If your dog takes a running start so that she is moving at 2.4 m/s at the bottom of the ramp, what is her speed when she reaches the top of the incline?

Fig: 1