Consider the cart on a track below. A pulling force is shown acting to the right. Assume that there is no resistance to motion from the surface (no friction) can be ignored. 0.5N 1kg If the mass of the cart is increased to 2 kg what effect will it have on the acceleration? O The acceleration remains the same in the new scenario as the original. O The acceleration will be greater in the new scenario than the original. O It's not possible to tell from the information provided. O The acceleration will be less in the new scenario than the original.

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An 1800 kg car starts from rest and accelerates to 25.0 m/s in 16.0 s. The force of air resistance on the car is constant and equal to 450 N. Find: A. the car's acceleration B. the force exerted by the engine C. the work done by the engine

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1. Sam, whose mass is 75 kg, takes off across level snow on his jet-powered skis. The skis have a thrust of 200 N and a coefficient of kinetic friction on snow of 0.10. Unfortunately, the skis run out of fuel after only 10 s. A. What is Sam’s top speed? B. How far has Sam traveled when he finally coasts to a stop?

An 8.00 kg crate sits on an inclined plane that is inclined at 33.0 above the horizontal. The coefficient of kinetic friction between the crate and the surface of the plane is 0.300. A constant horizontal force F = 28.0 N is applied to the crate (Figure 1), and the crate moves down the plane. Part A If the crate is initially at rest, find its speed 2.00s after the force is applied? Express your answer with the appropriate units. HA Value Units Figure 1 of 1> Submit Request Answer Provide Feedback F 33.0°

A force in the +z-direction with magnitude 18.0 N- (0.530 N/m)z is applied to a 6.60 kg box F(x) that is sitting on the horizontal, frictionless surface of a frozen lake. F(x) is the only horizontal force on the box. O Part A If the box is initially at rest at r = 0, what is its speed after it has traveled 16.0 m ? Express your answer to three significant figures and include the appropriate units. ? HA Value Units Submit Previous Answers Request Answer

n the figure to the right, the hanging mass m) is 2.50kg. What would be the required mass on the table (M) for the system to move with an acceleration of a=7.25m/s²? part of your solution, you are required to fill out the following: As

Ⓒ Macmillan Learning A block of mass m = 6.23 kg is attached to a spring that is resting on a horizontal, frictionless table. The block is pushed into the spring, compressing it by 5.00 m, and is then released from rest. The spring begins to push the block back toward the equilibrium position at x = 0 m. The graph shows the component of the force (in newtons) exerted by the spring on the block versus the position of the block (in meters) relative to equilibrium. Use the graph to answer the questions. How much work W is done by the spring in pushing the block from its initial position at x = -5.00 m to x = 2.20 m? W = V = -59.04 Incorrect What is the speed of the block when t reaches x 2.20 m? 2.41 Incorrect Umax = What is the maximum speed max of the block? 3.63 J Incorrect m/s m/s 6 5. 4. 3. 2 ↓ L₁ -3. -4. -5. -6. F (N) x(m) $

A 2.6 kg block is attached to a horizontal rope that exerts a variable force Fx = (20 – 5x) N, where x is in m. The coefficient of kinetic friction between the block and the floor is 0.25. Initially the block is at rest at x = 0 m. Part A What is the block's speed when it has been pulled to x = 0.80 m? V = μĂ Value m S ?