Answer:
a. Glass is denser than wood.
Explanation:
Density=Mass/volume
In this case we know that mass of glass is greater than wood. And the volume of both glass and wood are the same, so we will ignore that factor. Since mass is directly proportional to density, if your mass increase, your density increases as well, in this case.
Inital velocity of the jet (v) = 24 m/s
final velocity (u) = 0
time taken (t) = 1.6 s
acceleration(a) = (final velocity- inital velocity)/ time
= (0 - 24) /1.6
= -24/ 1.6
= -15
so,
the acceleration was - 15 m/s^2
For questions like this there are only a couple of possible equations you need to look at :)
In this case the equation for Kinetic energy (energy of motion) is:
Simply plug in the mass and velocity variable given in the question and you have your answer :)
Answer:
tbh vector does not have any direction at all the answer is 0