Car crosses the first third of the road with unknown speed and the rest of the road with the speed of 50 km/h. What is the the speed in the first third if the average speed of a car is 30km/h?

A 250000 W motor is used for 26.4 s to pull a boat straight toward shore. how far does the boat move toward shore if a force of 42000 N is applied by the motor? A. 157 m,. B. 1,590, C. 1.11•10^6, D. 6.60•10^6

Which of these is a mixture? calcium carbon dioxide salt water potassium

The nodes of a standing wave appears to remain stationary

1. A cart weighing 420 N rests on a 23° incline. Calculate the component of its weight that presses the cart to the hill.

Melanie completes a long distance run at an average speed of 6 mph. If it takes her 3 hours, how far did she run?

A series of steps that allows someone to conduct an experiment are called a

A coach is hitting pop flies to the outfielders. if the baseball (m = 145 g) stays in contact with the bat for 0.04 s and leaves the bat with a speed of 50 m/s, what is the average force acting on the ball?

The two major ways to transfer charge between two objects are

When a wire loop is connected to a battery, what is produced in the loop?

A solid sphere of radius R has a total charge Q distributed evenly throughout its volume. What fraction of the total charge is located inside a radius R/2?