answer is L. need worked out solution Near the surface of the Earth, a remote co

Question

answer is L. need worked out solution

Near the surface of the Earth, a remote controlled toy car accelerates from rest with constant acceleration, a = 2.45 m / s2, under the power of its own wheels on the horizontal roof of a square building with sides of length L as shown in the figure. If the car starts from rest on the far edge of the roof, a distance L from the end of the building, what is the horizontal distance D from the point it left the roof to where the car level ground ? L 2L L / 2 4L

Explanation / Answer

case- 1

Initialy car at rest with constant accleration

Hence Vi=0 m/s

a= 2.45 m/s2

L is the distance covered to the far end of the building .

L= 1/2at12

t1=[0.82 L]1/2

case- 2

here the toy car in vertical motion

Hence Vi=0 m/s

a= 2.5 m/s2

L is the distance covered to the far end of the building

we have the equation;L= 1/2at22

t2=[0.204L]1/2

total time, t= t1+ t2=[1.36L]1/2

D= 1/2at2 = 1/2* 2.45*1.84 L= 2.3 L

D= 2L

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