A car has an initial velocity of 45m/s and a final velocity of 0m/s 9 seconds later.

a. what is the acceleration?

b. how far did they travel during the 9s?

If you shake one end of a rope up and down, a wave passes through the rope. Which type of wave is it? surface wave transverse wave longitudinal wave None of the above

If you were trying to build a soundproof room, which of the following materials would you choose in order to absorb the most sound, based on the coefficient of absorption for each material? A. Wood B. Carpet C. Heavy curtains D. Concrete

The reactivity of an alkali metal depends on the metal's ability to electrons. True or False

What does the thermal energy of an object depend upon? the heat of that object and the density of particles the temperature, weight, and number of particles of that object the temperature and arrangement of the particles in that object the heat of

Whih of the following is the main goal of fitness evaluation?

Why dont animal cells need chloroplasts?

Is sugar cane a renewable or non-renewable source of energy? And why?

The speed an object needs to move away from the gravitational pull of the earth is called

Which fact is NOT true about gravity? Gravity depends on distance. Gravity depends on weight. The force of gravity between two objects will never be 0. Gravity depends on mass.

Does heat demagnetize?