Superman, with a mass of 150-Kg, goes into outer space to push a 125000-Kg alien spaceship out of stationary orbit. He uses his super strength and pushes the ship away at a speed of 150-m/s. What is the speed of Superman after his big push

125000 m/s.

Explanation:

The superman is pushing the spaceship in universe and we know there is absence of air or other interfering forces so in this case the total momentum will be conserved.

So, we can write

Where,

= mass of spaceship

= speed of spaceship

= mass of superman

= speed of superman

Now, putting the values given in the question in the above equation,

150 × 125000 = 150 ×

Solving for we get,

= 125000 m/s

Thus the speed of superman after pushing the spaceship will be 125000 m/s.

  distance on the y-axis and time on the x-axis.

explanation:

the instantaneous velocity = change in position/time taken

the slope of the graph should give instantaneous velocity.

  slope of a graph = change in value of y -axis / change in values of x -axis

  comparing both the equations

    change in value of y -axis = change in position

  change in values of x -axis = time taken

so position values should be on the y axis and time values should be on the x axis.

distance on the y-axis and time on the x-axis.