Vertical motion near the Earth's surface
Posted: April 19th, 2011, 6:33 amYeah, hi.
I'm doing Grade 11 Physics and wonder if I could get some help from this forum. I have two questions:
1. A helicopter is rising vertically with a uniform speed of 14.7ms-1 and a wheel drops off (bummer) when it is 49.0m from the ground. Calculate the time taken for the wheel to reach the ground and its velocity at impact.
2. A balloon is 30.0m above the ground and rising vertically with a uniform speed when a coin is dropped from the balloon's basket (wasn't me). If the coin reaches the ground in 4.00s, what is the speed of the balloon?
I'm using the equation S=ut+1/2a t(squared) but it isn't working out....
Thanks for any help you can give.
Runner
I'm doing Grade 11 Physics and wonder if I could get some help from this forum. I have two questions:
1. A helicopter is rising vertically with a uniform speed of 14.7ms-1 and a wheel drops off (bummer) when it is 49.0m from the ground. Calculate the time taken for the wheel to reach the ground and its velocity at impact.
2. A balloon is 30.0m above the ground and rising vertically with a uniform speed when a coin is dropped from the balloon's basket (wasn't me). If the coin reaches the ground in 4.00s, what is the speed of the balloon?
I'm using the equation S=ut+1/2a t(squared) but it isn't working out....
Thanks for any help you can give.
Runner