How much force is needed to accelerate a bicycle and rider with a total mass of 80 kg at a rate of 2.0 m/s2?

A. 20 N

B. 160 N

C. 320 N

D. 40 N

Write an expression for the final momentum (momentum of you shoe after you throw the shoe). Assume you are moving at a speed v. Use m for your total mass (including shoes) and shoe for the mass of the shoe.

That which travels in waves that are not the same length is called

The electric and magnetic fields that make up an electromagnetic wave occur are at right angles to each other. True False

The force that accelerates objects towards earth

A machinist is using a wrench to loosen a nut. The wrench is 25.0 {/rm cm} long, and he exerts a 17.0-{/rm N} force at the end of the handle at 37 ^/circ with the handle What is the magnitude of the torque does the machinist exert about the center

You are given miles = 50 miles, time = 1 hour initial given velocity = 0 miles/hour (your standing still) and final velocity = 50 miles/hour. you travel a total of 100 miles. How long did it take you (time) ?

The centripetal force acting on a satellite in orbit A. acts as an unbalanced force on the satellite. B. changes the direction of the satellite. C. is a center-directed force. D. all of the above

Compare your answer to the previous question with your observations in conducting this experiment. Discuss whether energy was conserved in your experiment. Was friction negligible

What is a controlled experiment? none of the variables are changed all variables are kept constant two variables are changed at a time one variable is changed at a time

At what phase would you expect to find extremely high and low tides?