Why is it important to know the velocity of an object, not just its speed?

Speed is only useful for fast-moving objects.

Velocity also tells you direction of motion.

Speed is always an average.

Velocity tells you the average speed.

5. A force of 250 N is used to push a heavy box down the street. If the force of friction between the box and the street is 195 N and the box has a mass of 60 kg, what is the acceleration of the box? Use GRASP!

The basis for defining the length of a day is the fact that question 21 options: a. earth moves through 365.25 days a year in its orbit about the sun. b. earth rotates on its axis in 24 hours; i. e., it rotates 15° of longitude per hour. c.

A record of travel along a straight path is as follows: (a) Start from rest with constant acceleration of 3.9 m/s 2 for 15.3 s; (b) Constant velocity of 59.67 m/s for the next 0.934 min; (c) Constant negative acceleration of - 11.1 m/s 2 for 3.71 s.

Your brothers mass is 55.0kg, and he has a 2.0 kg skateboard what is the combined momentum of your brother and his skateboard if they are going 8.50 m/s

A (n) is a material that causes a wave to bounce off of it

A flash of white light containing all the colors of the visible spectrum in air shines straight down on the surface of a pool.

A car accelerates uniformly from 0 to 15m/s in 5 s. Calculate acceleration.

Which device would a sleep researcher use to monitor a sleeping person's brain waves?

An experiment is performed to obtain the value of a physical property. If the true (i. e., correct) value of the property is 50 and the measured (i. e., experimental) value is 32, the percent error of the experimental result is:

White moths were found in huge numbers in the city of Birmingham. These moths could be easily camouflaged by the trees. Because of sudden industrial development, the trees in the city were covered with soot.