A ball is thrown at an angle of 45° to the ground. if the ball lands 87 m away, what was the initial speed of the ball? (round your answer to the nearest whole number. use g â 9.8 m/s2.)

The law of conservation of momentum states that a. the total initial momentum of all objects interacting with one another usually equals the total final momentum. b.

Problem 1: a car is to be hoisted by elevator to the fourth floor of a parking garage, which is 52 ft above the ground. if the elevator can accelerate at 0.7 ft/s2, decelerate at 0.

Describe what happens to pressure as the force exerted on a given area increases.

A 65 ml sample of argon gas has a temperature of 325 °c. what will the temperature be in °c when the volume of the gas is decreased to 25 ml at constant pressure?

Which of the following elements is classified as a metal? A Bromine B Helium C Sulfur D Lithium

This particle is found in the nucleus and adds mass to the nucleus, but changing its number does not change what the element is. This particle is the A. proton. B. photon. C. neutron. D. electron.

Projectile motion is an example of what kind of motion

What can change scientific knowledge?

6. What is ductility?

During practice, a baseball player hits a very high fly ball, and then runs in a straight line and catches it. Which had the greatest displacement during the time period from the hitting of the ball to its catching