A train rolls at a constant speed of 10 m/s across a horizontal track. A child standing on the flatbed of the train throws a ball so that it appears to move straight up to an observer standing next to the track.
a) What is the horizontal speed of the ball relative to the observer?
b) What is the horizontal speed of the ball relative to the train?
C)If the ball is also thrown upward with a speed of 20 m/s, what is the overall Initial speed of the ball
relative to the train?
Answers: 3
Another question on Physics
Physics, 21.06.2019 23:30
Acoil formed by wrapping 80 turns of wire in the shape of a square is positioned in a magnetic field so that the normal to the plane of the coil makes an angle of 28.0° with the direction of the field. when the magnetic field is increased uniformly from 200 µt to 600 µt in 0.400 as, an emf of magnitude 80.0 mv is induced in the coil. what is the total length of the wire?
Answers: 3
Physics, 22.06.2019 12:40
Question part points submissions used suppose that 2 j of work is needed to stretch a spring from its natural length of 26 cm to a length of 36 cm. (a) how much work is needed to stretch the spring from 28 cm to 32 cm? (round your answer to two decimal places.)
Answers: 2
Physics, 22.06.2019 20:00
What is the name of the perceived change in a sound wave’s frequency due to motion between the observer and the sound source?
Answers: 1
You know the right answer?
A train rolls at a constant speed of 10 m/s across a horizontal track. A child standing on the flatb...
Questions
Mathematics, 17.07.2019 15:30
English, 17.07.2019 15:30
Mathematics, 17.07.2019 15:30
Mathematics, 17.07.2019 15:30
Mathematics, 17.07.2019 15:30
Mathematics, 17.07.2019 15:30
Mathematics, 17.07.2019 15:30
English, 17.07.2019 15:30
