Below are a number of statements about Physics 1 material. Select T-True, F-Fals

Question

Below are a number of statements about Physics 1 material.
Select T-True, F-False, If the first is T and the rest F, enter TFFFF. (For a statement to be true it must always be true.)
(NOTE: The input syntax is DIFFERENT than the previous problem! Here, we do not ask for the letters of the correct answers. This time we want a string of T's and F's. Always read the problem statement carefully, CAPA problems come in both flavors!)

A) If a light car and a heavy truck collide, the force of the car on the truck will always be equal (in magnitude) to the force of the truck on the car.
B) In the absence of friction or any other force besides gravity, heavy objects accelerate downward faster than light objects do.
C) An object moving in a circle with constant (uniform) speed is accelerating in a direction tangent to the circle.
D) A ball is thrown straight up. (Neglect friction) While it is on its way up, its acceleration is steadily decreasing with time, reaching zero right at the top.
E) If there is no friction (or other nonconservative or external forces), the sum of kinetic and potential energy, KE+PE, of a closed system NEVER changes with time.

Explanation / Answer

Solution:

A) True If a light car and a heavy truck collide, the force of the car on the truck will always be equal (in magnitude) to the force of the truck on the car.

B) False In the absence of friction or any other force besides gravity, heavy objects accelerate downward equal as light objects do.

C)False An object moving in a circle with constant (uniform) speed is accelerating in a direction inwards the circle.

D)False A ball is thrown straight up. (Neglect friction) While it is on its way up, its acceleration doen't steadily decreases with time.

E)True Accoding to principal to total energy it is true as T.E = K.E + P.E  

Now as problem statement TFFFT

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