A 5.0 kg particle is moving with a velocity v(t) = (4.0î + 6.0tĵ) m/s. (Assume momentum is in kg · m/s, force is in newtons, and t is in seconds. Express your answers in vector form. Use the following as necessary: t. Do not include units in your answers.) What is the momentum (as a function of time) of this particle? What is the net force acting on this particle?

What is the correct answer? Explain When is the chosen answer wrong?

(a) State the principle of conservation of momentum. (b) A trolley X of mass 2 kg moving at 10 m s-¹ hits a stationary trolley Y of mass 3 kg. After a collision, the two trolleys stick together. i. 2 kg 10 m s¹¹ ii. X Before collision Y 3 kg Calculate the momentum of trolley X before the collision. Find the common velocity of trolley X and Y after the collision. iii. If the time of impact is 0.5 s, find the average force acting on trolley X. After collision iv. Is the collision elastic or inelastic? Show your calculation to explain your answer.

1. What are the equations for linear momentump and kinetic energy K? Please define the variables. 2. Please define concisely and in your own words the concept of conservation. Describe conservation of momentum and kinetic energy. 3. Briefly describe the difference between elastic and inelastic collisions and give an example of each. Describe these collisions in terms of the kinetic energy and momentum. 4. A moving object collides with and sticks to a stationary object. Do the combined objects move slower, faster or at the same speed as the original moving object? 5. What is the expected value of the ratio of the final and initial momenta, pf/p; ?

m Р V Calculating Momentum, Mass, and Velocity 0 Directions: Solve the following problems by entering values into the red boxes. Stop decimals at the tenths place (use 1 decimal). When all entries are GREEN, you are done. Don't use spaces when entering values! Question 1 A bicycle has a momentum of 125 kg*m/s and a velocity of 2.0 m/s. What is the bicycle's mass? Question 2 A baseball has a momentum of 21 kg"m/s. What the baseball's mass if it has a velocity 7.0 meters per second to cover the distance? Formula to use: Question 3 What is the velocity of an emu that has a momentum of 1800 kg*m/s and a mass of 45 kg? Question 4 What is the momentum of a 1500 kg car that has a velocity of 4.0 m/s? Formula to use: Question 6 What is the momentum of a 6.5 kg bowling ball rolled down an alley with a velocity of 3.0 m/s? Question 5 A linebacker has a momentum of 60 kg*m/s and a velocity of 3.0 m/s. What is the linebacker's mass? Formula to use: Formula to use: Question 9 Formula to use:…

6.3 PQ1 Newton's second law can be stated that the force is equal to the rate of change of momentum, F = d(mv)/dt. Tak- ing the derivative by parts yields F = m(dv) / (dt) + v(dm) / (dt). This does not correspond to F = ma. What is the source of the discrepancy? %3D

0.070 kg weighted mass by the clay ball was shot upwards, traveling 1.0 m before hitting and sticking to a brick of mass 2.0 kg suspended from the ceiling by a light cord. As a result of the collision, the brick + clay ball rises through a distance of 10.0 cm. Find the answers to the questions, part a and b. a) What was the speend of the ball of clay when it struck the brick? b) What was the speed of the launch by the clay ball?

Please answer the following questions with solutions

A firework explodes into three pieces as shown in the diagram below. Now that you have set up the equation for the x and y components of the final momentum of the firework, let's do some physics! Given: The initial firework had a mass of 9.0 kg and was launched at vi = 110 m/s vertically straight up.  The firework explodes into three pieces of equal mass 3.0 kg. The angles θ1 = θ3 = 20 ∘. Speed v1 = 100 m/s. What is the speed v2? Note: the angles shown for mass m1 and mass m3 are relative to the horizontal x axis. Mass m2 is moving straight up (y axis).

At one particular moment, a 19.0 kg toboggan is moving over a horizontal surface of snow at 4.60 m/s. After 7.50 s have elapsed, the toboggan stops. Use a momentum approach to find the magnitude of the average friction force (in N) acting on the toboggan while it was moving. N