True or false on mechanics

Exercise and reference answers

Questions

1. Statement is true

   Yes

   Statement

   A projectile follows a parabolic path.

2. Statement is true

   No

   Statement

   Gravity acts on the horizontal component.

3. Statement is true

   Yes

   Statement

   Range is greatest at 45 degrees.

4. Statement is true

   No

   Statement

   Centripetal acceleration points outward.

5. Statement is true

   Yes

   Statement

   Newton proposed the word centripetal.

6. Statement is true

   Yes

   Statement

   Speed is constant in uniform circular motion.

Instructions

Decide whether each statement is true or false.

Explanation