A student on a go-cart (with a combined mass of 85 kg) moving at 6.2 m/s collides with a 15 kg cart initially at rest. As a result of the collision, momentum is transferred from the first cart to the second cart. The velocity of the student and cart is 5.06 m/s after the collision. The collision lasts for 0.05 s. What is the absolute value of the force that acts during this collision

Askydiver weighing 140 lb (including equipment) falls vertically downward from an altitude of 19,000 ft and opens the parachute after 18 s of free fall. assume that the force of air resistance, which is directed opposite to the velocity, is of magnitude 0.55|v| when the parachute is closed and is of magnitude 14|v| when the parachute is open, where the velocity v is measured in ft/s. assume that acceleration due to gravity has magnitude 32 ft/s/s; remember that weight is the product of mass and gravitational acceleration. (a) find the speed of the skydiver when the parachute opens. (b) find the distance fallen before the parachute opens. (c) what is the limiting velocity vl after the parachute opens? (d) determine how long the sky diver is in the air after the parachute opens. (e) plot the graph of velocity versus time from the beginning of the fall until the skydiver reaches the ground.

What is required for an electric charge to flow through a wire? zero resistance in the wire a balance of electric potential high resistance in the wire a difference in electric potential

The law of the conservation of momentum says that the total momentum of any closed and isolated system cannot