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5 points The car with a mass of 1200 kg has come to a stop on a = 35° inclined plane. P 1.1 aw the free-body force diagram of the car, and label all the forces. [2 marks] 2. Given the car is stationary, calculate the required coefficient of static friction, ,. [3 marks] Show ALL your working.
6 points A golf ball is hit off the ground into the air at an angle of 10° with a velocity of 90 m/s. maximum height horizontal distance 1. Calculate the horizontal and vertical components of the velocity of the golf ball at impact. You may draw the velocity vector to show the components. [2 marks] 2. Calculate the maximum height of the golf ball will reach. [2 marks] 3. Calculate the horizontal distance travelled by the golf ball before it lands on the ground. [2 marks] Assume the air resistance is negligible.
17 7 points Starting from rest, an astronaut training centrifuge reaches the maximum angular speed of 3 rad/s in 20s, then remains rotating at the maximum angular speed. 1. What was the angular acceleration (in rad/s/s) of the centrifuge during the first 20 s? (1 mark) 2. What was the angular acceleration of the centrifuge at t=25s? (1 mark) 3. Given the radius of the centrifuger 5 m, find linear (translational) velocity of the astronaut when the centrifuge reaches its maximum angular speed. (2 marks) 4. What is the centripetal acceleration, ac of the astronaut at the maximum angular speed? (2 marks) 5. What is the ratio ? Use g -9.8 m/s/s. Provide the answer to closest integer. (1 mark) Show ALL your working. ↑here or Browse