The 2.2-Mg car increases its speed uniformly from rest to 17 m/s in 40 s up the inclined road. Determine the maximum power that must be supplied by the engine, which operates with an efficiency of e = 0.8. (Figure 1) Express your answer with the appropriate units. HA Pmax = 52.39 kW Submit Previous Answers Request Answer X Incorrect; Try Again Part B Also, find the average power supplied by the engine. Figure 1 of 1> Express your wer with the appropriate units. HA ? Pavg = 26.19 kW Submit Previous Answers Request Answer 10 X Incorrect; Try Again

Question 9 A car of mass 1200 kg is travelling west with a velocity of 72 kmh=1. It takes a left turn at 50° and continues with the same speed. It takes 5.5 s to turn the corner. a. Find the change in momentum of the car as it rounds the corner. b. Find the force the road applies to the cars tyres as it turns the corner. c. Find the force the car's tyres apply to the road as it turns the corner.

For a short period of time, a m = 3400 kg truck has a frictional driving force of FD= (650- +²) N acting on the wheels, where t is in seconds. At t = 0, the truck has a speed of of v₁. V₁ t = 0 21 Values for the figure are given in the following table. Note the figure may not be to scale. Variable Value m 5- s v2 = m Using the Principle of Linear Impulse and Momentum, a. Determine the speed of the truck when t = 3 s, v2. FD = f(t) Round your final answers to 3 significant digits/figures. m S V₂ t2

F = (C · t²) Q14. As shown in the image below, the force acting on the box is N, where constant C = 10 and t is time in s. Determine the magnitude of the total impulse (in N.s) done by force F to the box during the period from t = 0 to t = 1.5 s. Please pay attention: the numbers may change since they are randomized. Your answer must include 2 places after the decimal point. F Your Answer: Answer 3 5 4

The coefficient of kinetic friction between the60-kg crate and the ground is uf = 0.3. The crate starts from rest, and P = 225 N .(Figure 1) Part A Determine the velocity of the crate when t = 4s Express your answer to three significant figures and include the appropriate units. HẢ v = Value Units Submit Previous Answers Request Answer X Incorrect; Try Again; 3 attempts remaining • Part B Determine the distance the crate travels when 4 s Express your answer to three significant figures and include the appropriate units. Figure HÀ S = Value Units Submit Request Answer 30° Provide Feedback

Q1. Consider a 3-meter long pendulum placed on the moon and given an initial angular displacement of 0.4 rad and zero initial velocity. Note that gravity on the earth's moon is g,m g is the acceleration due to gravity on earth. g/6, where m mg (A) Write down the equation of motion for the pendulum (B) Calculate the amplitude of the angular displacement of the swinging pendulum (C) Calculate the maximum angular velocity of the swinging pendulum (D) Calculate the maximum angular acceleration of the swinging pendulum

5. A simple pendulum at the UCR department of physics and astronomy has a length of 20 m, and the acceleration due to gravity at this location is measured to be 9.803 m/s². Calculate the period of the pendulum.

A heavy truck is running up the track at an incline of 1 in 15 (sine) at a constant speed of 50 km/h. The total working power is 65 kW during this working condition. Calculate the power required to overcome the friction of force or the road resistance if knowing the mass of the truck is 10 tonnes?

Figure 4 shows a trolley of mass 6.12 kg passing through point A with a velocity of 6 m/s. It slides down a rail to point C. From A to C, 250 J of energy is lost due to friction. What is the equation used to find the velocity of the trolley at point C ?

6. part a please