A 60Kg man standing on stationary 40kg boat throws a 0.2kg ball with a velocity of m/s. Assuming that there's no friction between the man and the boat, what's the speed of the boat after the man throws the ball?

Which of the following is not am example of a polymer? protein nylon kevlar concreta

Compare the horizontal displacement of the two balls as they travel to the ground. what do you observe?

An object with initial temperature 130 ∘ f is submerged in large tank of water whose temperature is 50 ∘ f . find a formula for f ( t ) , the temperature of the object after t minutes, if the cooling constant is k = − 0.2 . remember newton's law of cooling (the rate of change of temperature with respect to time is equal to k times the difference between the temperature of the object and the surrounding temperature) ! : )