A train travels from station A to station B at a constant speed of 45 m/s. It takes the train 120 s to reach station B. The train then
travels at a constant speed of 60 m/s to station C. Stations B and C
are 16.8 km apart.
a) Calculate how far apart stations A and B are.
b) Calculate how long it takes for the train to travel from station B
to station C.
c) Find the average speed of the train between stations A and C.

Prompta snowboarder stands at the top of a hill and decides to see if he can increase his speed on his next trip down the slope.describe one thing the snowboarder could do to incrlase his speed on the slope. explain why this would cause his speed toincrease relate one of newton's laws to this problem.

The image shows a pendulum in simple harmonic motion the pendulum starts at a and swing to e

Air initially at 0.75 bar, 1000 k, and occupying a volume of 0.12 m^3 undergoes two processes. process 1-2: the air is compressed isothermally until the volume is halved. process 2-3: the air undergoes a constant pressure process until the volume is halved again. assume ideal gas behavior. a) determine the mass of the air, in kg. b) the work and the heat transfer for each of the two processes, in kj. (100 kj = 1 bar . m^3)