Arollercoaster car reaches a velocity of 2 m/s at the top of a hill and begins to accelerate down the hill. 4.5 seconds later it has reached the bottom of the hill and is traveling with a velocity of 11 m/s. what is the rollercoaster car's acceleration

Awalk up the phase change graph worksheet

If the textbook weighs 19.6 newtons on venus,what is the strength of gravity on venus?

Along wire carrying a 4.2 a current perpendicular to the xy-plane intersects the x-axis at x=−1.7cm. a second, parallel wire carrying a 3.0 a current intersects the x-axis at x=+1.7cm. part a at what point on the x-axis is the magnetic field zero if the two currents are in the same direction? express your answer to two significant figures and include the appropriate units.