<h2>
Impulse = 4.9 kgm/s</h2>
Explanation:
Impulse is given by change of momentum.
Mass of softball = 0.49 kg
Initial velocity of softball = 13 m/s
Initial momentum = 0.49 x 13 = 6.37 kgm/s
Final velocity of softball = 23 m/s
Final momentum = 0.49 x 23 = 11.27 kgm/s
Change of momentum = Final momentum - Initial momentum
Change of momentum = 11.27 - 6.37
Change of momentum = 4.9 kgm/s
Impulse = Change of momentum
Impulse = 4.9 kgm/s
Answer:
Explanation:
Overgrazing and woodcutting are responsible for most of the desertification of rangelands, cultivation practices inducing accelerated water and wind erosion are most responsible in the rain-fed croplands, and improper water management leading to salinization is the cause of the deterioration of irrigated lands.
Answer:
The distance up to which they can jump is 1.5 m
Solution:
As per the question:
The extension of the legs, d = 0.600 m
Acceleration,
where
g = acceleration due to gravity =
Now,
Let the initial velocity of the jump be v m/s
So, by the third eqn of motion:
(1)
where
v' = final velocity
a = acceleration
d = distance between the legs
Also, for maximum range, angle,
(2)
x = maximum horizontal range
Thus, using eqn (1):
Now, using eqn (2):
Work is done through movement which needs energy