A meteorite of mass 1kg enters the Earth’s atmosphere and decelerates from 99m/s to 1m/s due to air resistance. What is the work done by the air? A. 98J
B. 4900J
C. 9800J
D. 19600J

In which of the following cases is work being done on an object? question 2 options: pulling a trailer up a hill carrying a box down a corridor suspending a heavy weight with a strong chain pushing against a locked door

Explain how the energy of rubber ball is tranforned as it roll down a ramp. give evidence that the energy of the og the ball remains the same at all points on the ramp

During which interval are the persons represented by the graph not moving? a) 0 to 0.5 hrs b) 1.5 to 2 hrs c) 2 to 2.5 hrs d) 4.5 to 5 hrs