A 53 kg rocket-powered sled is sliding at constant velocity over a rough surface. If the sled is experiencing 722 N of frictional force, how much force must the rockets be providing?

Question

A 53 kg rocket-powered sled is sliding at constant velocity over a rough surface. If the sled is experiencing 722 N of frictional force, how much force must the rockets be providing?

Answer 1

Key words CONSTANT velocity which means acceleration is zero so sum of forces must also equal zero by Newton’s second law. So force of friction 722N equals the force of the rockets powering the sled.