An Unfinished Road* While chatting on his phone, Joe drives his car at a constan

Question

An Unfinished Road* While chatting on his phone, Joe drives his car at a constant 29 m/s up a 16 degrees bridge ramp, not realizing that the road was never finished. The road ends suddenly when it is a height 12.5 m above the ground. Ignore air drag.

Part C
What is the vertical component of the velocity of Joe's car the instant before it strikes the ground? Use up as the positive direction. m/s
Part D What is the horizontal component of the velocity of Joe's car the instant before it strikes the ground? Use right as the positive direction. m/s
Part E What is the speed of Joe's car the instant before it strikes the ground? m/s An Unfinished Road* While chatting on his phone, Joe drives his car at a constant 29 m/s up a 16 degrees bridge ramp, not realizing that the road was never finished. The road ends suddenly when it is a height 12.5 m above the ground. Ignore air drag.

While chatting on his phone, Joe drives his car at a constant 29 m/s up a 16 degrees bridge ramp, not realizing that the road was never finished. The road ends suddenly when it is a height 12.5 m above the ground. Ignore air drag.

Part C
What is the vertical component of the velocity of Joe's car the instant before it strikes the ground? Use up as the positive direction. m/s
Part D What is the horizontal component of the velocity of Joe's car the instant before it strikes the ground? Use right as the positive direction. m/s
Part E What is the speed of Joe's car the instant before it strikes the ground? m/s Part C
What is the vertical component of the velocity of Joe's car the instant before it strikes the ground? Use up as the positive direction. m/s
Part D What is the horizontal component of the velocity of Joe's car the instant before it strikes the ground? Use right as the positive direction. m/s
Part E What is the speed of Joe's car the instant before it strikes the ground? m/s Part C
What is the vertical component of the velocity of Joe's car the instant before it strikes the ground? Use up as the positive direction. m/s
Part C
What is the vertical component of the velocity of Joe's car the instant before it strikes the ground? Use up as the positive direction. m/s
m/s
Part D What is the horizontal component of the velocity of Joe's car the instant before it strikes the ground? Use right as the positive direction. m/s
Part D What is the horizontal component of the velocity of Joe's car the instant before it strikes the ground? Use right as the positive direction. m/s
m/s
Part E What is the speed of Joe's car the instant before it strikes the ground? m/s Part E What is the speed of Joe's car the instant before it strikes the ground? m/s m/s

Explanation / Answer

D) since there is no force in the horizontal direction..

hence velocity Vx = 29* cos(16deg)

=> Vx = 27.88 m/s

E) final velocity v = sqroot(Vx^2+ Vy^2)

=> v = sqroot(27.88^2 + 17.575^2)

=> v = 32.96 m/s

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