under what circumstances can the average velocity of a moving object be zero when its average speed is 50 km/hr?

The drive chain in a bicycle is applying a torque of 0.850 N ∙ m to the wheel of the bicycle. You can treat the wheel as a thin uniform hoop (or ring) with a mass of 0.750 kg and a radius of 33.0 cm. What is the angular acceleration of the wheel? A.

All waves carry energy true or false?

If two 6-volt sources are connected in parallel to supply a 24-ohm load and the total current is 0.25 A, how much current would each source supply to the load

A 50 kg boy and his 100 kg father went jogging. Both ran at a rate of 5m/s. Who had more kinetic energy

Suppose an object has 40 N of tension force pulling it upward and 60 N of gravitational force pulling it downward. There are no forces acting on the object. The object then has a net upward force of 20 N. True or False

Which actions are evidence that a chemical reaction has occurred? Check all that apply. A: a change in color B: the formation of a precipitate C: a clear liquid becoming cloudy D: a change in shape E: the formation of bubbles F: the formation of

Which sphere forms Earth's outermost layer? Atmosphere Biosphere Cryosphere Hydrosphere

an 100kg object traveling at 50m/s collides (perfectly inelastic) with a 50kg object initially at rest. what is the sum of the momentum of both objects prior to the collision?

A train moves at constant velocity of 50km/h. how far will it move in 0.5h?

Which process best describes part of a scientific investigation? O designing a solution O evaluating the conclusion O evaluating the solution O identifying the conclusion