Question

1) a certain force acts on a body of mass 10kg and changes its velocity from 2m/sec to 5m/sec. calculate the speed.
2)calculate energy possessed by a stone of mass 20g kept at a hieght of 5m. (g=9.8m/sec)
3)a engine supplies 196Joules of energy to a body of weight 500g. how high can it be lifted. (take g=m/m/sec^2)
4) if 196*10^2 joules of energy is used to raise a 20kg boy above the ground. how high could he be raised.(g=9.8m/sec^2)

Answer 1

hey

Answer 2

i'm in a class right now sorry (online class)

Answer 3

its ok..

Answer 4

@dan815 @undeadknight26 @pooja195 @sammixboo Any of y'all know this?

Answer 5

sorry im in a live lesson

Answer 6

hmnm ... ok... :(

Answer 7

sorry dont no

Answer 8

@sleepyjess @sleepyhead314

Answer 9

If an object is accelerating to the right, the net force on the object must be directed towards the right.If an object is moving to the right and slowing down, then the net force on the object is directed towards the left.Accelerating objects are either slowing down or speeding up.The acceleration of an object is directly dependent upon its mass and inversely dependent upon its net force.An object has an acceleration of 8 m/s/s. If the net force acting upon the object is increased by a factor of 2, then the new acceleration would be 10 m/s/s.An object has an acceleration of 8 m/s/s. If the net force acting upon the object is increased by a factor of 3, then the new acceleration would be 11 m/s/s.An object has an acceleration of 8 m/s/s. If the mass of the object is increased by a factor of 2, then the new acceleration would be 16 m/s/s.An object has an acceleration of 8 m/s/s. If the mass of the object is increased by a factor of 4, then the new acceleration would be 2 m/s/s.An object has an acceleration of 8 m/s/s. If the net force acting upon the object is increased by a factor of 2 and the mass of the object is decreased by a factor of 2, then the two factors would offset each other and the acceleration would still be 8 m/s/s.
An object has an acceleration of 8 m/s/s. If the net force acting upon the object is increased by a factor of 2 and the mass of the object is increased by a factor of 4, then the new acceleration would be 4 m/s/s.An object has an acceleration of 8 m/s/s. If the net force acting upon the object is decreased by a factor of 2 and the mass of the object is increased by a factor of 4, then the new acceleration would be 1 m/s/s.An object has an acceleration of 8 m/s/s. If the net force acting upon the object is increased by a factor of 4 and the mass of the object is increased by a factor of 2, then the new acceleration would be 16 m/s/s.
A 2-kg object accelerates from rest to a final velocity of 6 m/s in 3 seconds. The magnitude of the net force acting upon the object is 12 N.
A 10-kg object slows down from 24 m/s to a final velocity of 9 m/s in 3 seconds. The magnitude of the net force acting upon the object is 80 N.

Answer 10

plzz. can u giv in a short & a step-by-step calculating manner

Answer 11

@Junie.Michell98

Answer 12

A 10-kg object slows down from 24 m/s to a final velocity of 9 m/s in 3 seconds. The magnitude of the net force acting upon the object is 80 N.

Answer 13

ok...