A car of mass 1670kg initially at a speed of 80 km/m crushes into a wall, if the accident lasted for 0.2 sec. what is the amount of force exerted in the car during the crash
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- A 0.450-kg hammer is moving horizontally at 7.00 m/s when it strikes a nail and comes to rest after driving the nail 1.00 cm into a board. Assume constant acceleration of the hammer-nail pair. a. Calculate the duration of the impact. b. What was the average force exerted on the nail?The driver of a 1000 kg car traveling at 30 m/s slams on its brakes. If the force of friction is 7000 N, determine the following: The acceleration of the car. The stopping distance.A car moving at 14 m/s crashes into a tree and stops in 0.91 s. The mass of the passenger inside is 69 kg. Calculate the magnitude of the average force, in newtons, that the seat belt exerts on the passenger in the car to bring him to a halt.
- A force of 1.50 N acts on a 0.20-kg carts so as to uniformly accelerate it along a straight air track. The track and force are horizontal and in line. How fast is the cart going after acceleration from rest through 30 cm, if friction is negligible?A 2 000-kg car is slowed down uniformly from 20.0 m/s to 5.00 m/s in 4.00 s. (a) What average force acted on the car during that time, and (b) how far did the car travel during that time?A 925-kg pickup decelerates to rest from a speed of 75 km/h in a distance of 140 m. Consider that the pickup is initially moving in the positive direction. Suppose instead of braking that the pickup hits a concrete abutment at frill speed and is brought to a stop in 2.00 m. Calculate the force, in newtons, exerted on the pickup in this case.
- A car traveling at 20 m/s runs into a bridge abutment and crumples for 1.2 m before coming to a full stop. If we estimate the process as constant deceleration motion, what is the average force exerted on the car, which weighs 1500 kg, during the collision process?A 1400-kg car is brought from 25 m/s to 10 m/s over a time period of 5.0 seconds. Determine the force experienced by the car.If a 0.50-kg block initially at rest on a frictionless, horizontal surface is acted upon by a force of 5.6 N for a distance of 5.0 m, then what would be the block's velocity? Answer in m/s
- A young girl is riding a bicycle that has a total mass (including the kid) of 21.2 kg. The girl is moving at 5.99 m/s on a flat road when suddenly she slams on the brakes and skids to a stop in 8.22 meters. What was the magnitutde of the average force due to friction acting on the bicycle? Remeber, the magnitude of a force is always positive. Assume a constant friction force measured in Newtons and 3 significant digits in your answer.The front 1.20 m of a 1,600-kg car is designed as a "crumple zone" that coltapses to absorb the shock of a collision. (a) If a car traveling 23.0 m/s stops uniformly in 1.20 m, how long does the collision last? (b) What is the magnitude of the average force on the car? (C) What is the magnitude of the acceleration of the car? Express the acceleration as a multiple of the acceleration of gravity.In a head-on collision, a car stops in 0.14 ss from a speed of 11 m/sm/s . The driver has a mass of 90 kgkg , and is, fortunately, tightly strapped into his seat. What force is applied to the driver by his seat belt during that fraction of a second?