Which describes the relationship between potential and kinetic energy of a ball thrown up in the air as it falls back to the ground?

a.
gravitational potential energy increases; kinetic energy increases.

b.
kinetic energy equals gravitational potential energy.

c.
kinetic energy increases; gravitational potential energy decreases.

d.
the mass of the ball is required to answer this.

For general projectile motion, when the projectile is at the highest point of its trajectory, its acceleration is zero? a)the horizontal and vertical components of its velocity are zero. b) its velocity is perpendicular to the acceleration. c)the horizontal component of its velocity is zero. d)its velocity and acceleration are both zero.

What are the three ways that an object can accelerate

Which of the following statements comparing electron microscopy and light microscopy is false? which of the following statements comparing electron microscopy and light microscopy is false? both the electron microscope and the light microscope use the same wavelengths for illumination. images produced by light microscopes can be in color, whereas electron microscope images are black and white unless they are artificially colored. the electron microscope has greater resolution than the light microscope. electron microscopes can allow examination of viruses and internal cell structures, whereas light microscopes are limited to objects that are 0.5 micrometers and larger. request answer