Projectile motion how long was the football up in the air

In which situation is no work considered tone be done by a force? A) when the angle between the force and displacement is 180° B) when the angle between the force and displacement is 90° C) when the angle between the force and displacement is 45° D)

The mass of a cm3 (cube) stone is 180. a) calculate its density. b) The stone is broken into two peaces. What is the density of each piece. c) The smaller piece weights 80g. Calculate its Volume.

How many significant figures, has the number 0.003010?

Instructions:Drag the tiles to the correct boxes to complete the pairs. Match each term with its definition.

A battery is used to charge a parallel combination of two identical capacitors. if the potential difference across the battery terminals is v and total charge q flows through the battery during the charging process then the charge on the positive

A 6.0 kg box slides down an inclined plane that makes an angle of 39° with the horizontal. If the coefficient of kinetic friction is 0.19, what is the magnitude of the acceleration, in m/s2, of the box down the slope?

Identify the following as a suspension or a colloid. sand in water

A cyclist starts at a position of 0 m and takes 3 s to move east to a position of + 8 m. He then cycles west to a position of + 5 m which takes an additional 2 s. What is the cyclist's displacement? a. + 11mb. - 8mc. - 5m d. + 5m

What happens when you shoot a bullet into the sky?

If you want to lift a 5-kg box to a height of 2 meters, how much work must be done? O A. 2J O B. 50 J O C. 98 J O D. 100