1) v = gt = 10*1.5 = 15 m/s
2) r = gt^2 /2 = 10*(1.5)^2 / 2 = 11.25 meters
Answer:
The toy's energy is 18 J.
Explanation:
We have, a 4 kg toy is lifted off the ground and falls at 3 m/s. It is required to find toy's energy.
The toy will have kinetic energy due to its motion. The energy is given by :

So, the toy's energy is 18 J.
Polar molecules do have ionic bonds
Answer:
Range will become 4 times of initial range
Explanation:
Let the velocity of projection is u
And angle at which projectile is projected is 
And acceleration due to gravity is 
So range of projectile is equal to
........eqn 1
Now in second case it is given that velocity of launching is doubled
So new velocity 
So new range will be equal to
.....eqn 2
Now dividing eqn 2 by eqn 1


So if we double the initial launch speed then range will become 4 times
Answer:
Ideal mechanical advantage of the machine is 2
Explanation:
Ideal mechanical advantage of the machine is

here we have to consider the distance
