At the top of the jump, the whale's velocity is Om/s. The whale falls 2.2 m from the top of the jump to the surface of the sea. Calculate the velocity of the whale when it hits the surface of the sea.
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Answers
Answer:
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Answer:
Velocity of 35 m/s
Explanation:
At the top of the jump, the whale's velocity is Om/s. The whale falls 2.2 m from the top of the jump to the surface of the sea. Calculate the velocity of the whale when it hits the surface of the sea.
From the top of a cliff 50m above sea level, a stone is thrown vertically upwards with a velocity of 15m/s.
After how many seconds and with what velocity will it hit the sea
Solution:
S = ut + (1/2)gt²
S = 50 m
u = -15 m
g = 10 m/s²
50 = -15t + (1/2)*10t²
=> 5t² - 15t - 50 = 0
=> t² - 3t - 10 = 0
=> (t - 5)(t + 2) = 0
=> t = 5 as time can not be negative
Hence after 5 secs it hit the sea
v = u + at
v = -15 + 10 * 5
v= 35 m/s
Speed is determined by dividing the distance travelled by the time taken to travel it. It gives the amount of time it took to travel a certain distance divided by the distance travelled.
Speed is inversely correlated with time and directly correlated with distance. As a result, distance equals speed times time, and time equals distance divided by speed; as speed rises, distance travelled will shorten, and vice versa.
It will git with a velocity of 35 m/s
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