An object has an initial velocity of 5 m/s East then speeds up to 25 m/s East in 4 seconds. What is the acceleration of the mass?

1. A person is pushing a 10.0 kg desk with a force of 17.0 N. If the friction opposing the motion was 2.0 N, what is the acceleration? 2. Given that the acceleration (from the 1st problem) was constant, if the person was moving the desk at 5.0 m/s at first and stopped after 20.0 seconds, what was his final velocity?

A 5000 kg truck traveling 30 m/s comes to a stop. The coefficient of friction between the tires and the road is 0.80. What is the acceleration of the truck? What is the stopping distance?

A 1000.0 kg car accelerates uniformly to double its speed from 13.7 m/s in 4.76 s. What net force acted on this car (in kN)?

7. You put a box on a skateboard and give it a quick push with a certain force. It starts to move. After it leaves your hand, it will... * a. Continue at a constant speed forever. O b. Slow down constantly until it stops. c. Speed up constantly forever. d. Speed up for a little while, then go at a constant speed forever. e. Speed up for a little while, go at a constant speed for a while, then slow down to a stop. sheet of oa

5. Two 20kg carts are attached to opposite ends of a cable. Each cart is on a different side of an incline as shown. Neglect the mass and friction of the cable and pulley. a. What is the acceleration of the carts? b. If the carts start at rest, and they do not run out of cable or incline, how far will they have traveled in 5 seconds? m₁ = 20 kg/ 12° 9 m₂ = 20 kg 20°

2. A dockworker applies a constant horizontal force of 100.0 N to a block of ice on a smooth horizontal floor. The frictional force is negligible. The block starts from rest and moves a distance of 25 m in a time of 5.0 s. What is the mass of the block of ice?  If the worker stops pushing after 5.0 s, how far does the block move in the next 4.0 s ?

Question 6 6. The masses of the Atwood's machine are M 8.657 kg and m 2.616 kg. The acceleration (m/s2) of the system is:

24. A pickup truck with mass 980 kg is initially at rest. The truck accelerates to a speed of 95 km/hr within a distance of 60 meters. What the direction and size of the force that acts on the truck? a. b. If the truck were carrying a load of 200 kg, what new force would be required to achieve the same acceleration?

An Atwood's machine with a frictionless pulley has mass1 = 8.8 kg and is accelerating up at m/s2. What is the value of mass2?