Question

a blockbof mass m moving with velocity u it meets a hill of mass 3m and height h that can also move along ​the plane the block begins to slide up the hill if the hill is initially at rest what valur of u provides the maximum velocity of the hill assume all the surface are frictionless

Answer 1

Explanation:

Given A tennis ball is thrown upwards from the edge of a cliff with a speed of 10 m/s. It lands on the ground below the cliff 3.0 seconds later. We can ignore air resistance. Find the displacement of the tennis ball.

• We have initial velocity = 10 m/s
• Final velocity = - 10 m/s
• Acceleration due to gravity = 20 m/s^2
• So from equation of motion we have
•                  v = u + at
•           so   -10 = 10 + (-10) t
•          So – 20 = - 10 t
•          Or t = 2 secs  
• Now we have
• Initial velocity = - 10 m/s
• Time = total time – time taken for first half
•          = 3 – 2
•          = 1 sec
• Now using the equation of motion to find displacement we have,
•   S = ut + ½ at^2
•    S = - 10(1) + ½ x (- 10) (1)^2
•    S = - 10 + (- 5)
•    S = - 10 – 5
• Or S = - 15 m
• Therefore displacement of tennis ball is – 15 m

Reference link will be

https://brainly.in/question/24227298

Answer 2

Answer:

-15m will be the correct answer hope it helps you