Answer:first law
Explanation:
it states the a body in motion or rest maintain its state until an external force is acted on it
There are no appropriate units for power on the list you provided
Answer:
W=315 x 10⁵ J
Explanation:
Given that
F= 2.5 x 10⁵ N
d= 90 m
K.E.=5.4 x 10⁷ J
We know that work done by all force is equal to the change in kinetic energy
Lets take work done by catapult is W
W + F.d= K.E.
W= 5.4 x 10⁷ - 2.5 x 10⁵ x 90 J
W= (540 - 25 x 9) 10⁵ J
W=315 x 10⁵ J
Answer:
the hydrogen filled balloon is denser than the air filled balloon
Sound waves actually travel much faster in water than air, but words and the direction of the noise are distorted.
