An unmarked police car traveling a constant 36.8 m/s is passed by a speeder traveling 56 m/s. Precisely 2.8 seconds after the speeder passes, the police officer steps on the accelerator; if the police car's acceleration is a constant 1.2 m/s2, how much time passes before the police car overtakes the speeder after the speeder passes (assumed moving at constant speed).

Boxing gloves are padded to lessen the force of a blow. (a) calculate the force exerted by a boxing glove on an opponent’s face, if the glove and face compress 7.50 cm during a blow in which the 7.00-kg arm and glove are brought to rest from an initial speed of 10.0 m/s. (b) calculate the force exerted by an identical blow in the gory old days when no gloves were used and the knuckles and face would compress only 2.00 cm. (c) discuss the magnitude of the force with glove on. does it seem high enough to cause damage even though it is lower than the force with no glove?

If the new moon happens on january 15th, what shape will it be on february 6th?

Which of the following statements are evidence that gases do not always behave ideally? check all that apply.? a. co2 gas becomes dry ice (solid co2) at 1 atm and –78.5 °c. b. when two gases are mixed, they follow dalton\'s law of partial pressures. c. at 4 k and 1 atm, helium is a liquid. d. it is impossible to compress a gas enough so that it takes up no volume.