A 3.58-kg steel ball strikes a massive wall at 10.0 m/s at an angle of  ? = 60.0°  with the plane of the wall. It bounces off the wall with the same speed and angle (see the figure below). If the ball is in contact with the wall for 0.226 s, what is the average force exerted by the wall on the ball? magnitude      N direction      ---Select--- +x-direction −x-direction +y-direction −y-direction

*Problem 3: A 1000 kg car travelling at 60 mph (26.84) impacts a brick wall. The car comes to a stop in At = 15 ms. a) What is the magnitude of the impulse (J ) applied to the car? (A: 26,800 Ns) b) What is the magnitude of the net force applied to the car during the crash? (A: 1.79x106 N) c) A person with a mass of 75 kg is strapped into the car. What is the magnitude of the impulse applied to the person? (A: 2010 Ns) d) What is the magnitude of the net force applied person during the crash? (A: 134,000 N) m e) What is the acceleration of the person during the crash in terms of g? 1g = 9.8– (A: 182g) f) How could we increase the survivability of the crash? Explain.

Please asap

B1

Adolf and Ed are wearing harnesses and are hanging at rest from the ceiling by means of ropes attached to them. Face to face, they push off against one another. Adolf has a mass of 120 kg, and Ed has a mass of 89 kg. Following the push, Adolf swings upward to a height of 0.69 m above his starting point. To what height above his own starting point does Ed rise? Number i Units

A professional golfer crushes a golf ball off the tee a horizontal distance of 310 m (see photo). The ball leaves the tee at an angle of 45° with respect to the horizontal. If the head of the driver is in contact with the 45-g ball for 1.0 ms, calculate the average force exerted on the ball by the driver. Number i Units Leonard Kamsler/Popperfoto/ Getty Images SEN Fa Ma 5

Adolf and Ed are wearing harnesses and are hanging at rest from the ceiling by means of ropes attached to them. Face to face, they push off against one another. Adolf has a mass of 110 kg, and Ed has a mass of 79 kg. Following the push, Adolf swings upward to a height of 0.60 m above his starting point. To what height above his own starting point does Ed rise? Number i Units

7

A 500-kg car traveling east at 30.0 m/s collides with an 800-kg truck traveling north at 20.0 m/s at an intersection. The two vehicles stuck together after the collision. The coefficient of sliding friction between both vehicles and the road is 0.300. Assume that the collision takes place on a level road. 1. Which of the following statements is FALSE? The kinetic energy of the system is not conserved during the collision. The friction between the vehicles and the road affects the motion of the vehicles after collision. The momentum of the car after the collision is equal to the vector sum of the momentum of the car before the collision and impulse exerted by the truck to the car during the collision. The final speed of the combined mass after the collision is equal to the sum of the initial speeds of the car and the truck. 3. Which of the following best approximates the magnitude of the IMPULSE EXERTED BY THE CAR TO THE TRUCK during the collision?

A ballistic pendulum consists of a 3.9-kg wooden block originally at rest, 0 = 0°. When a 2-g bullet strikes and becomes embedded in it, it is observed that the block swings upward to a maximum angle of 0 6° (Figure 1) Figure 0 1.25 m 1 of 1 1.25 m Part A Estimate the speed of the bullet. Express your answer to three significant figures and include the appropriate units. UB= Submit μA Value Provide Feedback Request Answer Units ?