Your car tire is rotating at 3.5rev/s when suddenly you press down hard on the accelerator. After travelling 200m, the tire's rotation has increased to 6.0 rev/s. What was the tire's angular accelaration?

Mary needs to row her boat across a 100m wide river that is flowing to the east at speed 1.0m/s.Mary can row with a speed of 2.0m/s.
a. If Mary points her boat due North, how far from the intended landing spot will she be when she reaches the opposite shore?
b. What is her speed with respect to the shore?

Question

Your car tire is rotating at 3.5rev/s when suddenly you press down hard on the accelerator. After travelling 200m, the tire's rotation has increased to 6.0 rev/s. What was the tire's angular accelaration?

Mary needs to row her boat across a 100m wide river that is flowing to the east at speed 1.0m/s.Mary can row with a speed of 2.0m/s.
a. If Mary points her boat due North, how far from the intended landing spot will she be when she reaches the opposite shore?
b. What is her speed with respect to the shore?

anonymous · Answer

so do you need help with these questions? or you put it up to tutor someone else? :)

anonymous · Answer

@Potatoes.ramu

potatoes.ramu · Answer

I haven't studied angular velocity in a REALLY long time.. I'll try helping with the second one wait.

anonymous · Answer

and I warned u in advance. pliz try

potatoes.ramu · Answer

Hey 2m/s is her speed with respect to the river right?

anonymous · Answer

yes

potatoes.ramu · Answer

Okay.. then her absolute velocity with respect to the shore is 2+1 =3m/s

anonymous · Answer

can u draw the diagram @Potatoes.ramu

anonymous · Answer

jst wanna  c something

vincent-lyon.fr · Answer

"Okay.. then her absolute velocity with respect to the shore is 2+1 =3m/s"

Careful: you need to add velocities, not speeds.

potatoes.ramu · Answer

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