Answer:
Change in momentum will be -4.4 kgm/sec
So option (A) is correct option
Explanation:
Mass of the ball is given m = 0.10 kg
Initial velocity of ball
And velocity after rebound
We have to find the change in momentum
So change in momentum is equal to ( here negative sign shows only direction )
So option (A) will be correct answer
Answer:
Option C
Solution:
As per the question:
Velocity of the jet, v = 600 m/s
Acceleration, a = 4.0 g
Now,
To calculate the radius of curvature:
The necessary centripetal force on the jet is given by the force:
(1)
where
= centripetal force
where
m = mass of the jet
R = radius of curvature of the path
Using eqn (1):
Thus
where
g = acceleration due to gravity =
R = 9183.67 m ≈ 9200 m
Answer:
4.17 m/s
Explanation:
To solve this problem, let's start by analyzing the vertical motion of the pea.
The initial vertical velocity of the pea is
Now we can solve the problem by applying the suvat equation:
where
is the vertical velocity when the pea hits the ceiling
is the acceleration of gravity
s = 1.90 is the distance from the ceiling
Solving for ,
Instead, the horizontal velocity remains constant during the whole motion, and it is given by
Therefore, the speed of the pea when it hits the ceiling is