19. If a block is pulled toward the east, the frictional force exerted on the box should be toward the: * O North O South O East O West 20. A 250 kg ball and a 5 kg ball, made of the same material, are dropped at the same time. When they hit the ground and the 250 kg ball makes a much louder noise. Why does this happen? O a. The 250 kg ball falls faster, so it hits the ground at a faster speed. b. The 250 kg ball hits the ground with more force than the 5 kg ball. O c. The 250 kg ball has less air resistance than the 5 kg ball. d. The 250 kg ball falls faster, so it hits the ground with more force.

19. If a block is pulled toward the east, the frictional force exerted on the box should be toward the: * O North O South O East O West 20. A 250 kg ball and a 5 kg ball, made of the same material, are dropped at the same time. When they hit the ground and the 250 kg ball makes a much louder noise. Why does this happen? O a. The 250 kg ball falls faster, so it hits the ground at a faster speed. b. The 250 kg ball hits the ground with more force than the 5 kg ball. O c. The 250 kg ball has less air resistance than the 5 kg ball. d. The 250 kg ball falls faster, so it hits the ground with more force.

Inquiry into Physics

8th Edition

ISBN:9781337515863

Author:Ostdiek

Publisher:Ostdiek

Chapter3: Energy And Conservation Laws

Section: Chapter Questions

Problem 1C: Rank the following three collisions in terms of the extent of damage that the car would experience....

See similar textbooks

Similar questions

The front 1.20 m of a 1 400-kg car is designed as a crumple zone that collapses to absorb the shock of a collision. If a car traveling 25.0 m/s stops uniformly in 1.20 m, (a) how long does the collision last, (b) what is the magnitude of the average force on the car, and (c) what is the acceleration of the car? Express the acceleration as a multiple of the acceleration of gravity.
Rank the following three collisions in terms of the extent of damage that the car would experience. Explain your reasons for ranking the collisions as you did. (a) A car going 10 m/s striking an identical car that was stationary on level ground. (b) A car going 10 m/s running into an immovable concrete wall. (c) A head-on collision between identical cars, boom going 10 m/s.
Does everything have energy? Give the reasoning for your answer.
The massless spring of a spring gun has a force constant k=12N/cm . When the gun is aimed vertically, a 15-g projectile is shot to a height of 5.0 m above the end of the expanded spring. (See below.) How much was the spring compressed initially?
When starting a foot race, a 70.0-kg sprinter exerts an average force of 650 N backward on the ground for 0.800 s. (a) What is his final speed? (b) How far does he travel?
When an 80.0-kg man stands on a pogo stick, the spring is compressed 0.120 m. (a) What is the force constant of the spring? (b) Will the spring be compressed more when he hops down the road?
16. A 10-g bullet in motion with 1000 m / s hits and passes through a 2.0-kg block initially at rest, as shown. The bullet leaves the block with a velocity of 400 m / s. To what maximum height does the block rise above its initial position? choose an answer A B C D E 78 cm 66 cm 56 cm 46 cm 37 cm
The massless spring of a spring gun has a force constant k = 0.04 N/cm. When the gun is aimed vertically, a 40 g projectile is shot to a height of 5.0 m above the end of the expanded spring. (See below.) How much was the spring compressed initially? (Find d, in meters.)
A 0.185 kg golf club swings and hits a 0.045 kg ball. You are able to hit the ball in the elastic sweet spot which changes the velocity from 44 m/s to 32 m/a. How far does the ball travel?
Calculate the velocity (in m/s) of a 0.345-g object that has Ek = 23.5 J.
A pitcher throws a 0.60 kg ball of clay at a 3.0 kg block of wood. The clay sticks to the wood on impact, and their joint velocity afterward is 1.4 m/s. What was the original speed of the clay (in m/s)? ______________m/s
The Hulk (200kg of pure angry muscle)collides head-on with a truck (2500kg). If the Hulk was running at 10.0m/s and the truck was moving at 15.0 m/s in the opposite direction, after they stick together, what is their speed (in m/s)? Either the Hulk or the truck needs a negative initial velocity.