chimatiro

6. A swimmer is capable of swimming at 12 m/s in still water. If she swims directly across a 180m wide river whose current is 0.85 m/s. i. How far downstream will she land? ii. How long will it take her to reach the other side?

A body is dropped from rest at a height of 150 m and simultaneously another body is dropped from rest from a point 100 m above the ground. What is the difference between their heights after they have fallen for 3 seconds?

A tennis ball is dropped on to the floor from a height of 10 m. It rebounds to a height of 2.5 m. If the ball is in contact with the floor for 0.01 seconds, what is the average acceleration during the contact?