if the train took about 5.4 second to go from the top of the first hill to the bottom of the first hill, what was the speed of the train at the bottom of the first hill

What causes the different appearances of the moon?

What part of the plant takes in the carbon dioxide

A stone is thrown with an initial velocity of 20 meters per second straight upward from the edge of a cliff 100 meters above a canyon floor. The stone just misses the cliff'a edge on its way down.

What is the magnitude and direction of an electric field that exerts a 2.00*10-5N upward force on a - 1.75μC charge?

Which fact about the moon, as seen from the earth, is evidence that the amount of time the Moon takes to complete one rotation and one revolution are nearly identical? a. We usually see the Moon at night. b. We cannot see the Moon on some nights. c.

A student conducts and investigation to determine a ball's mass, displacement, velocity and acceleration. (A) Identify each of the following as wither a vector or scalar quantity: Mass, Displacement, Velocity & Acceleration.

A ball is rolling down a hill at + 1.0 m/s, The ball is uniformly accelerating at +4.9 m/s?, What will the ball's velocity be 4.0 s later? +8.9 x 100° m/s +2.0 x 10^1 m/s +2.1 x 10^1 m/s -1.9 x 10^1 m/s

What is the difference between unicellular and multicellular organisms?

Is momentum conserved in the collision?

Which of the following has more inertia: (a) a rubber ball and a stone of the same size? (b) a bicycle and a train? (c) a five-rupees coin and a one-rupee coin?