Answer You need to consider that the gravity on earth is 9.8 m/s/s. This means any object you let go on the earths surface will gain 9.8 m/s of speed every second. You need to apply a force on the object in the opposite direction to avoid this acceleration. If you are pushing something up at a constant speed, you are just resisting earths acceleration. The more massive and object is, the greater force is needed to accelerate it. The equation is Force = mass*acceleration. So for a 2kg object in a 9.8 m/s/s gravity you need 2kg*9.8m/s/s = 19.6 Newtons to counteract gravity. Work or energy = force * distance. So to push with 19.6 N over a distance of 2 meters = 19.6 N*2 m = 39.2 Joules of energy. There is an equation that puts together those two equations I just used and it is E = mgh
The amount of Energy to lift an object is (mass) * (acceleration due to gravity) * (height)
:Hence, the Work done to life the mass of 2 kg to a height of 10 m is 196 J. Hope it helps❤️❤️❤️
Explanation:
Answer:
Explanation:
It is given that,
Mass of puck 1,
Mass of puck 2,
Initial speed of puck 1,
Initial speed of puck 2,
After the collision, the speed of puck 1,
Let is the final velocity (in m/s) of puck 2 after the collision. Using the conservation of momentum as :
So, the final velocity of the puck 2 after the collision is 24 m/s. Hence, this is the required solution.
Answer:
They will go backwards?
Explanation:
If positive they go forward but is negative they go backwards.
It would be 3.15 in meters