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PLEASE HELP NOW!! 51 POINTS!!

A rock rolls horizontally off of a 75m cliff. The rock lands 5.11m from the base of the cliff. Calculate the initial velocity of the rock.

User Daniel Cho
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1 Answer

3 votes

Answer:

it will be 3 seconds

Step-by-step explanation:

initial horizontal velocity of the rock, u = 20 m/s

horizontal distance traveled by rock, R = 60 m

The the range of the projectile is given by;

R = vt

where;

v is the initial horizontal velocity of the rock

t is the time spent by the rock in air

t = R/v

t = 60 / 20

t = 3 s

User Lisek
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