A rubber ball and a steel ball are dropped from the same height onto a concrete floor. They have the same mass, and lets assume that they both rebound to the same height after hitting the ground. How would the average forces experienced by the balls compare. O The steel ball would experience the greater average force O The average forces would be the same O The rubber ball would experience the greater average force O Depends on the height from where they are dropped.

Highway safety engineers want to design roadside barriers that will crumple in the event that a car drives off the road and collides with them, slowing down the car more gradually. The average person has a mass of 68 kg and travels on a highway at a velocity of 27 m/s. If the engineers know that the maximum force that a person can safely withstand is 2180 N, approximately how much time is required to crumple the barrier to safely slow the person with this force?

A rubber ball and a steel ball are dropped from the same height onto a concrete floor. They have the same mass, and lets assume that they both rebound to the same height after hitting the ground. How would the average forces experienced by the balls compare.    Group of answer choices 1-The steel ball would experience the greater average force 2-The average forces would be the same 3-The rubber ball would experience the greater average force 4-Depends on the height from where they are dropped.   In which case do you expect the average force to be greater (for the same mass and initial speed of the cart)   Group of answer choices 1-With the rubber bumper 2-With the magnetic bumper 3-Would be same for both types of bumpers 4-No answer text provided.

Most of us know intuitively that in a head-on collision between a large dump truck and a subcompact car, you are better off being in the truck than in the car. Why is this? Many people imagine that the collision force exerted on the car is much greater than that exerted on the truck. To substantiate this view, they point out that the car is crushed, whereas the truck is only dented. This idea of unequal forces, of course, is false; Newton's third law tells us that both objects are acted upon by forces of the same magnitude. The truck suffers less damage because it is made of stronger metal. But what about the two drivers? Do they experience the same forces? To answer this question, suppose that each vehicle is initially moving at 8.10 m/s and that they undergo a perfectly inelastic head-on collision. Each driver has mass 73.0 kg. Including the masses of the drivers, the total masses of the vehicles are 800 kg for the car and 4,000 kg for the truck. If the collision time is 0.130 s,…