i have this question that i couldn't get but it's on this quiz i have tommorow. A 600-kg jet car accelerates from rest under the force of its jet engine. After travelling 1.00 km in 21.0s, the jet engine shuts off and the jet car eventually comes to a rest at 1.4 km further down the track, stopped by the frictional force of the ground. Calculate the force due to the jet engine, and the constant frictional force applied while the car is in motion. anyone can help me please????