Recent content by bustin

i finally got it. i got 10802 m/s. thanks for the tip

i tried to look into that but I couldn't find much info in my book. could you be more specific?

1. What is the launch speed of a projectile that rises vertically above the Earth to an altitude equal to 14 Rearth before coming to rest momentarily? Homework Equationssqrt{2GM(\\frac{1}{R_e}-\\frac{1}{14R_e})} The Attempt at a Solution G= 6.67x10^11 M=5.97x10^24 R_e=6.37x10^6 I get 2988...

Homework Statement A bicyclist is finishing his repair of a flat tire when a friend rides by with a constant speed of 3.9 m/s. Two seconds later the bicyclist hops on his bike and accelerates at 2.0 m/s^{2} until he catches his friend. Homework Equations V=V0+At The Attempt at a Solution...

1. a block is pushed up a 35 degree incline (no friction) by an applied force. If F= 20N and m= 2.0kg, what is the magnitude of the resulting acceleration of the block? 2. not sure? f=ma 3. don't know where to start. It has been a long time since physics