Use Newton's second law of motion to solve the following problems.

ron bicycles forward with an acceleration of 2.1 m/s^2 if he is applying a forward force of 195N, what is his mass

If F1 = 390 N and F2 = 550 N, determine the angle θ (0∘≤θ≤180∘) between them, so that the resultant force has a magnitude of FR = 780 N. Express your answer to two significant figures and include the appropriate units.

If you drive at 100 km/hr for six hours how far will you go

Which statement best describes a device that has a high energy efficiency? Its ratio of energy absorbed to energy released is high. Its ratio of energy input to energy output is high. It wastes little energy. It wastes a lot of energy.

Which of the following has the greatest magnitude? 1 Newton 10 Newtons 30 Newtons

The main greenhouse gases in the atmospheres of the terrestrial planets are

Which of the following scientists did not contribute scientific discoveries to physical science? A) Isaac Newton B) Marie Curie C) Gregor Mendel

A soccer ball with a mass of 0.45 kg is kicked and is moving at 8.9 m/s. Find the kinetic energy of the ball.

An object has a mass of 12.8 kg and a velocity of 8.4m/s. what is the kinetic energy of the oblects

Why is it necessary that all three thermometers were at approximately the same distance from the light bulb

Would you expect the Earth's surface temperature to continue to rise if CO2 levels continue to increase but levels of atmospheric water vapor begin to decrease? Explain your reasoning