Answer:
Explanation:
Height attained by body = 50 cm
= .5 m
Initial velocity = u
v² = u² - 2gh
0 = u² - 2gh
u² = 2 x 9.8 x .5
u = 3.13 m /s
During the initial period , the muscle stretches by around 10 cm during which force by ground reacts on the body and gives acceleration to achieve velocity of 3.13 m/s from zero .
v² = u² + 2as
3.13² = 0 + 2 a x .10
a = 49 m/s²
reaction by ground R
Net force
R-mg = ma
R= m ( g +a )
= mg + ma
=W + (W/g) x a
W ( 1 + a / g )
= W ( 1 + 49 / 9.8 )
= 6W
I believe that is true, yes!
Answer:
Explanation:
As per Doppler's effect of sound the frequency of the sound when source is approaching the observer is given as
similarly when source is moving away from the observer then its frequency is given as
now we know that the ratio of two frequency is
Answer:
<h2>3 Bags</h2>
Explanation:
1) Since the bags hold three pineapples
2) we can also hold two pineapples in one bag.
Hope this helps! <3