How much force is needed to push an object?
Furthermore, how much force is needed to push it up the incline?
You need 660 newtons of force to push the refrigerator up the ramp. In other words, your two friends, who can exert 350 newtons each, are enough for the job.
Subsequently, one may also ask, how much force does it take to push a car?
Substituting stated values, F = 3,000 pounds x 12.22-feet/sec^2/32.2-feet/sec^2 or 3,000 x 0.3795 = 1,138.5 pounds, representing the dynamic load exerted by the drive-wheel tire treads against the road to accelerate the car.
No, a constant force is needed to keep an object moving at constant speed. No, a force is needed to keep an object moving at constant speed, but it doesn't have to be a constant force. Yes, an object will move at constant speed unless a force acts to change its motion.