A train travels 84 kilometers in 1 hours, and then 85 kilometers in 3 hours. What is its average speed?

A 38.0 kg satellite has a circular orbit with a period of 1.30 h and a radius of 7.90 * 106 m around a planet of unknown mass. If the magnitude of the gravitational acceleration on the surface of the planet is 30.

Sensible heat involves a change in which aspect of a substance?

Differentiating States of Matter Warm-Up BE Which state of matter has the greatest amount of particle movement? solid O liquid o gas

A racehorse can accelerate from a dead stop to 15 m/s in 9.0 seconds. What is the acceleration of the horse?

Current events and overexposure of sun

Four potential forces can act on the ball Which combination of forces will keep the ball in static equilibrium? The length of the arrows represents the magnitude of the force A and B A and C B and D 8. Cand D Submit Force, Mass, and Motion

The resultant of a 50N force acting on an object to the right and a 20N force acting on the object to the left is what

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?