In an experiment, two carts equipped with accelerometers and force sensors are sent towards one another with equal velocities and collide. Cart A has twice the mass of cart B. Which of the following statements are true about the magnitudes of the force each cart exerts on the other and the magnitude of the acceleration of each cart during the collision? ад > ав a A = aB FAonB = FBonA a A < aB FAonB > FBonA FAonB < FBonA O 0 O O 0

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 8.50 m/s and that they undergo a perfectly inelastic head-on collision. Each driver has mass 72.0 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 0.110 s,…

Kara Moore was applying make up in the parking lot Unaware that Lisa's car was stopped in her lane 30 ft ahead. Kara rear ended Lisa's car. Kara's 1300 kg car was moving a 11m/s and completerly stopped after hitting Lisa;s car in 0.14 sec. What is the magnitude of the force experienced by Kara's car?

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?