Two objects are dropped in vacuum chamber from the same height: a marble and a bowling ball. Which of the following are true? (Mark two answers) The bowling ball will accelerate faster
After 1 second both objects will have the same acceleration
In a vacuum objects can't move
Both objects will reach the ground at the same speed
The marble will remain in the air longer

Samir watches a 100-minute movie on his spaceship. maria's spaceshipe flies in the same direction as samir's spaceship but she observes his move to last 125 minutes and his spaceship to be 40 m long. how long does samir observe his own spaceship to be? according to an observer on earth, planet x is stationary. maria and samir depart earth on their spaceships at the same time, each flying at 0.5c. maria flies toward planet x and samir flies in the opposite direction. according to maria, her voyage to planet x takes 9 years. how many years does marias voyage take according to samir?

Who was the first scientist to measure speed as distance over time?

An ionic compound can conduct electricity when a it is dissolved in water b its crystals are ground into powder c it is in solid form d it is heated to just below its melting point