Level 4
#16 Block on ramp question: A 7 kg block is given an initial velocity of 8.0 m/s going up an incline of 30 degrees. If the coefficient of friction between the block and the ramp is 0.3, what is the velocity of the block when it returns to the bottom of the ramp? #17 Acrobat on skis question: 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 degree angle above the horizontal and at a height of 10.0 m. Disregard air resistance. a) find the skier's speed when she leaves the track b) find the maximum height attained c) find the range (horizontal displacement) of the skier Note: this is neither a cliff nor a golf ball problem since there is a delta Y AND a a launch angle. You will have to use the quadratic formula to solve kinematic #2. #18 COE Challenge |