A cart of mass 8.0kg was moved by applying two constant forces. Force 1 is 28.0N at 42.0 degrees, and Force 2 is 13.0N at 110 degrees. Initially, the cart has a velocity of (3.50i + 2.20j)m/s. a. Express the two forces in unit-vector notation. b. Find the total force exerted on the cart. c. Find the angle at which the total force is applied. d. What is the acceleration of the cart? e. What is the cart's velocity after 5.0s? f. What is the position of the cart after 5.0s? g. What is the angle of the position after 5.0s? h. What is the total work done by the two applied forces?

A bullet is accelerated down the barrel of a gun by hot gases produced in the combustion of gun powder. What is the average force (in N) exerted on a 0.0500 kg bullet to accelerate it to a speed of 500 m/s in a time of 1.90 ms (milliseconds)? (Enter the magnitude.) N

14. A 66.0 kg skier with an initial velocity of 9.30 m/s slides up a slope of 35.0° to a height of 2.50 m above where she started. The coefficient of kinetic friction is 0.0750. a. Find the force due to friction on the hill. b. Find the skier's velocity at the top of the hill. V = ? KE₁ Vi 35° 2.5 m

A 4.95 * 105 -kg rocket is accelerating straight up. It's engines produce 1.4 * 107 N of thrust, and air resistance is 4.55 * 106N.Considering the variables below:m =4.95*105 -kg f = 1.4 * 107 N fr=4.55*106 N   What would be rockets acceleration, using a coordinates system where up is positive?

A 150-g baseball is dropped from a tree 15.0 m above the ground. a.)With what speed would it hit the ground if air resistance could be ignored? Express your answer to three significant figures and include the appropriate units. b.)If it actually hits the ground with a speed of 8.00 m/s, what is the magnitude of the average force of air resistance exerted on it? Express your answer to three significant figures and include the appropriate units.

A commercial airplane is coming in for a landing. Just before it hits the runway it is moving at 76 m/s. The plane has a mass of 20,000 kg. The runway is 1.6km long and, obviously, the airplane needs to be stopped before it reaches the end of the runway. How large is the braking force the airplane needs to stop safely before the end of the runway?

Please show complete solution for letters d, e, f, g and h

Please asap

A train is traveling up a 2.78 ° incline at a speed of 4.44 m/s when the last car breaks free and begins to coast without friction. Part A How long does it take for the last car to come to rest momentarily? Express your answer using two significant figures. HV ΑΣφ t = S Submit Request Answer Part B How far did the last car travel before momentarily coming to rest? Express your answer using two significant figures. ΑΣφ ? S = m Submit Request Answer Provide Feedback

SA3. A block is given an initial velocity of 5.00 m/s up a frictionless 20.0° incline. How far up the incline does the block slide before coming to rest? SA4. A man is pulling a crate along a concrete floor. This time, let's be specific. The crate has a mass of 100 kg and the man pulls with a force of 1 250 N. The coefficient of friction between the crate and the floor is 0.2. What is the acceleration of the crate? SA5. A horizontal force of 80 N is used to pull a 20 N wooden box moving toward the right along a horizontal, wood surface as shown. Calculate the magnitude of the frictional force acting on the box. Determine the magnitude of the force acting on the box. Determine the mass of the box. Calculate the magnitude of the acceleration of the box.