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

A toy train accelerates with a constant acceleration of 1.0 meter per second squared. Thetrain consists of an engine with a mass of 450. grams pulling a box car with a mass of 75.0 grams and a caboose at the end with a mass of 55.0 grams. What force does the engine exert on the box car? What force does the box car exert on the engine? What force does the box car exert on the caboose? What force does the caboose exert on the box car? For the purposes of this question you may ignore the force of friction though of course, the train would have a mighty hard time accelerating without being able to exert a frictional force on the track.

You work at a garden store for the summer. You lift a bag of fertilizer with a force of 114 N, and it moves upward with an acceleration of 0.810 m/s². (a) What is the mass (in kg) of the fertilizer bag? kg (b) How much (in N) does the fertilizer bag weigh? N

An object is at rest on a table. The earth is pulling this object down with a force of magnitude m · g. If we consider this force as the action of an action-reaction pair, what is the reaction force of this force m · g? a) The table pushes the object up b) The object pulls up to the ground c) The earth pushes up the table d)The object pushes the table down e)The table pushes down to the ground

Problem 4: Two teams of seven members engage in a tug of war. Each of the first team's members has an average mass of 67 kg and exerts an average force of 1350 N. Each of the second team's members has an average mass of 72 kg and exerts an average force of 1365 N. a) What is the magnitude of the acceleration of the two teams? b) What is the tension in the section of the rope between the teams?

You have gone skiing at the Poconos. You (mass 45 Kg) are being pulled up a 300 snow-covered slope by a tow rope at constant speed 0.5 m/s. Ignore friction. Calculate the normal force on you and the tension in the rope. (Hint: Draw a force diagram, i.e., all the forces acting on you.) a) Normal force = 382 N, Tension = 220.5 N b) Normal force = 220.5 N, Tension = 382 N

A squirrel (mass 526 g) sits at rest at the bottom of the tree. At some moment it starts running vertically up the tree and reaches a speed of 4.4 m/s in 0.96 seconds. Assuming that the acceleration is constant, a) What is the magnitude of the acceleration of the squirrel? 4.583 b) What is the magnitude of the force that the squirrel exerts on the bark of the tree during the acceleration phase? 2.410658 X

A car of mass 972 kg is traveling 24.4 m/s when the driver applies the brakes, which lock the wheels. The car skids for 5.27 s in the positive x-direction before coming to rest. a.) What is the car's acceleration (in m/s2)? (Indicate the direction with the sign of your answer.)   (b) What magnitude force (in N) acted on the car during this time?   (c) How far (in m) did the car travel?

In an experiment performed in a space station, a force of 49 N causes an object to have an acceleration equal to 9 m/s2. What is the object's mass?   (a) What is the person's mass? kg(b) The elevator accelerates upward momentarily at the rate of a = 4 m/s2. What does the scale read then? N(c) The elevator then moves with a steady speed of 7 m/s. What does the scale read now? N