A car traveling 56.0 km/h is 24.0 m from a barrier when the driver slams on the brakes.The car hits […]
Daily archives: April 22, 2016
A world’s land speed record was set by Colonel John P. Stapp when in March 1954 he rode a rocket-propelled […]
A rocket-propelled sled that moved along a track
Suppose a rocket ship in deep space moves with constant acceleration equal to , which gives the illusion of normal […]
Suppose a rocket ship in deep space moves
The brakes on your car can slow you at a rate of . (a) If you are going 137 km/h […]
The brakes on your car can slow you
A certain elevator cab has a total run of 190 m and a maximum speed of 305 m/min, and it […]
A certain elevator cab has a total run
On a dry road, a car with good tires may be able to brake with a constant deceleration of . […]
On a dry road, a car with good tires may
An electron has a constant acceleration of . At a certain instant its velocity is 9.6 m/s. What is its […]
An electron has a constant acceleration of
A muon (an elementary particle) enters a region with a speed of and then is slowed at the rate of […]
A muon (an elementary particle) enters a region
An electric vehicle starts from rest and accelerates at a rate of in a straight line until it reaches a […]
An electric vehicle starts from rest and accelerates
Certain mushrooms launch their spores by a catapult mechanism. As water condenses from the air onto a spore that is […]