Answer:
Explanation:
given,
mass of boy(m₁) = 40 kg
mass of the skateboard(m₂) = 2.50 kg
velocity of skateboard(V) = 5.30 m/s
speed of the boy(v₁) = 6 m/s at 9.50° above the horizontal
friction force is not acting in x-direction hence no we can apply conservation of momentum in x- direction
as the boy jumps over sidewalk skateboard cannot go through the sidewalk, there must be some force in the y direction so, momentum is not conserved.
negative sign represent velocity of the skateboard is in the opposite direction of boy.
No. As long as you're on the Moon, it stays the same. But it's less than
the weight of the same person or object when they're on the Earth.
Answer:
y = 0.44 m
Explanation:
As we know that path difference on the screen is given as
now for constructive interference we know that
path difference = integral multiple of wavelength
so we have
now for 4th maximum on the screen we can say
here N = 4
L = 170 cm = 1.70 m
also we know
path difference on screen = d
now we have
Answer:
Explanation:
We are going to use the accelerated motion formula on the vertical component taking the upwards direction as positive.
Since <em>at maximum height the speed will be </em>, the formula can be written as , which for our values is:
Written to three decimal places.