Ahandball player hits the ball with a mass of 0.25 kg. the ball travels at a velocity of 15 m/s for .75 s until it hits the wall.
what is the average acceleration of the handball

a. 20m/s^2
b 0.05m/s
c, 20m/s
d.0.05m/s^2

the temperature in kelvin of 2.0 dm3 of an ideal gas is doubled and its pressure is increased by a factor of four. what is the final volume of the gas

myth. it was once thought that animals, including cats and dogs, could only see in black and white. however, scientists have proven this to be a myth. in all animals, including humans, the perception of colour is determined by the presence of cells in the eye called cone photoreceptors.