Physics, 27.12.2021 01:00 andrewalas88

A police officer points a laser gun from a moving police car at the back of a car that is passing at great speed. when the laser gun emits the first pulse, the car is 60 m in front of the police car. the speed of the police car is 80 km/h. A. calculate the time between sending the pulse and registering the reflected pulse. neglect the movement of the car relative to the police car during this time.
B. calculate the speed of the moving car in km/h.
Can you please help me. my teacher ignores me.

Answers: 2

Show answers

Other questions on the subject: Physics

Physics, 21.06.2019 20:20, bnnn

An asteroid is discovered in a nearly circular orbit around the sun, with an orbital radius that is 2.47 times earth's. what is the asteroid's orbital period, its "year," in terms of earth years?

Answers: 1

continue

Physics, 22.06.2019 07:00, girlysimbelieve

The seven sisters, seven stars located more than 400 light-years away in the taurus constellation can be seen here with venus and another constellation, orion. the seven stars stay grouped together but seem to move, like the planet venus. why do stars seem to move like planets in the night sky?

Answers: 3

continue

Physics, 22.06.2019 12:30, cxmochaa

If you place a magnet under a clear dish, and sprinkle iron fillings over it, above what part of the magnet will most of the fillings gather

Answers: 2

continue

Physics, 22.06.2019 18:30, ptrlvn01

Two 2.0-cm-diameter disks face each other, 1.0 mm apart. they are charged to ±10 nc. what is the electric field strength between the disks? a proton is shot from the negative disk toward the positive disk. what launch speed must the proton have to just barely reach the positive disk?

Answers: 1

continue

You know the right answer?

A police officer points a laser gun from a moving police car at the back of a car that is passing at...