Question

watch it!
go to this link and watch the video:
http://studyjams.scholastic.com/studyjams/jams/science/forces-and-motion/acceleration.htm
\study jams: newton’s second law: acceleration\
then answer these questions:

1. the rate at which an object changes speed is called ______.
2. what can be measured by acceleration?

a. how much an object changes speed
b. if an object changes direction
c. both speed and direction

1. what is the formula to calculate force?

Explanation:

Question 1

From the context of forces and motion (Newton's Second Law related to acceleration), the rate of change of an object's speed is defined as acceleration.

Acceleration is a vector quantity, which means it considers both the change in speed (magnitude) and the change in direction. Option A only considers speed change, Option B only direction change, while Option C includes both, which matches the definition of acceleration.

From Newton's Second Law, the formula to calculate force is derived as \( F = ma \), where \( F \) is force, \( m \) is mass, and \( a \) is acceleration.

Answer:

acceleration

Question 2