The driver of a car slams on the brakes, causing the car to slow down at a rate of 24.0ft/s2 as the car skids 125ft to a stop. How long does the car take to stop?

What was the car's initial speed?

Scientists use laser range-finding to measure the distance to the moon with great accuracy. a brief laser pulse is fired at the moon, then the time interval is measured until the "echo" is seen by a telescope. a laser beam spreads out as it travels because it diffracts through a circular exit as it leaves the laser. in order for the reflected light to be bright enough to detect, the laser spot on the moon must be no more than 1.0 km in diameter. staying within this diameter is accomplished by using a special large-diameter laser. part a if λ = 540nm , what is the minimum diameter of the circular opening from which the laser beam emerges? the earth-moon distance is 384,000 km. express your answer to two significant figures and include the appropriate units.

How many times did thomas edison mess up the light bulb

Which describes increasing the efficiency of energy resource