physics
posted by bob .
A skateboarder, starting from rest, rolls down a 13.9m ramp. When she arrives at the bottom of the ramp her speed is 6.06 m/s. (a) Determine the magnitude of her acceleration, assumed to be constant. (b) If the ramp is inclined at 33.2 ° with respect to the ground, what is the component of her acceleration that is parallel to the ground?

a. a = (Vf^2  Vo^2) / 2d,
a = ((6.06)^2  0) / 27.8 = 1.32m/s^2.
b. X = hor. = 1.32cos33.2 = 1.11m/s^2 =
component parallel to ground.
Respond to this Question
Similar Questions

physics!!
A skateboarder, starting from rest, rolls down a 14.0m ramp. When she arrives at the bottom of the ramp her speed is 7.40 m/s. (a) Determine the magnitude of her acceleration, assumed to be constant. (b) If the ramp is inclined at … 
posting again! please help!! physics
A skateboarder, starting from rest, rolls down a 14.0m ramp. When she arrives at the bottom of the ramp her speed is 7.40 m/s. (a) Determine the magnitude of her acceleration, assumed to be constant. (b) If the ramp is inclined at … 
Physics
I need help with this question...A skateboarder, starting from rest, rolls down a 12.0m ramp. When she arrives at the bottom of the ramp her speed is 8.90 m/s. (a) Determine the magnitude of her acceleration, assumed to be constanIf … 
physics
A skateboarder, starting from rest, rolls down a 14.0m ramp. When she arrives at the bottom of the ramp her speed is 8.00 m/s. (a) Determine the magnitude of her acceleration, assumed to be constant. 
physics
A skateboarder, starting from rest, rolls down a 11.5m ramp. When she arrives at the bottom of the ramp her speed is 6.95 m/s. 
Physics
A skateboarder, starting from rest, rolls down a 12.5m ramp. When she arrives at the bottom of the ramp her speed is 6.45 m/s. (a) Determine the magnitude of her acceleration, assumed to be constant. 
physics
A skateboarder, starting from rest, rolls down a 13.4m ramp. When she arrives at the bottom of the ramp her speed is 6.14 m/s. (a) Determine the magnitude of her acceleration, assumed to be constant. (b) If the ramp is inclined at … 
physics mechanical energy
A skateboarder with mass ms = 42 kg is standing at the top of a ramp which is hy = 3.7 m above the ground. The skateboarder then jumps on his skateboard and descends down the ramp. His speed at the bottom of the ramp is vf = 6.3 m/s. … 
physics
A skateboarder with mass ms = 42 kg is standing at the top of a ramp which is hy = 3.7 m above the ground. The skateboarder then jumps on his skateboard and descends down the ramp. His speed at the bottom of the ramp is vf = 6.3 m/s. … 
physics
A box of mass 5.0 kg starting from rest slides down a 1.8 m long ramp inclined at an angle of 22.0 deg. from the horizontal. If the ramp is frictionless, how long will it take the box, starting from rest, to reach the bottom of the …