A revolver of mass 5kg releases a bullet of mass 0.10kg at a speed of 100m/s.find the revolvers speed recoil

The earth falls freely in a gravitational field that is largely due to the
moon7
. Moreover, the earth is surrounded by a sphere of liquid called the
ocean. Based on your answers to problem 1, do you expect the ocean to
be perfectly round? Draw a picture of its shape.

The spactime diagram below is drawn in the reference frame of a small lab sitting on the earth (which experience a newtonian gravitational field of g=10m/s^2 ) which of the worldline shown below has the greatest proper time? Why the answer you choose is correct

Give some example of time dilation and length contradiction

Use tiur knowledge of geometry to show that the angle alpha between the worldline of an inertial observer and the light cone(draw in intertial frame using units in which light rays travel at 45 degees) is the same as the angle B between that observer line of simultaneity.

Calculate the size of stelar aberration effect in newtonian physics for light coming straight down at speed c and a telescope moving straight sideway at speed v

An archer fires an arrow towards the wall of a castle. The arrow is fired at 45° from horizontal at a velocity of 22m/s. If the wall is 40m away and stands 7m tall, calculate whether the arrow will drop inside the castle walls.
a) Calculate the maximum height of the arrow
b) Calculate the maximum range of the arrow
c) Calculate the vertical height of the arrow as it reaches the wall
d) Describe the journey of the arrow and whether or not it was successful

The equation of two progressive waves is given by y1 = Asin(kx-wt) and y2 = Asin(kx -wt+θ). Show that
a) y= 2A sin(kx-wt)
b) y= 0