Question

A shark is swimming at 10 m/s west when it spots some floating bait caught in some seaweed straight ahead. After 10 s, and traveling at a velocity of 15 m/s, the shark reaches the bait. What was the shark's average acceleration? A. 0.5 m/s² B. 0.5 m/s² east C. 0.5 m/s² west D. 10 m/s²

Answer 1

The average acceleration is 0.5 m/s² west

Step-by-step explanation:

As we know that

Acceleration =

Putting the values

Acceleration =

Acceleration = 0.5

Since the shark was moving in west so the Acceleration will be in west too

Answer 2

C. 0.5 m/s² west

Step-by-step explanation:

The shark average acceleration is given by the following equation:

`a=(v-u)/(t)`

where:

u = 10 m/s west is the initial velocity of the shark

v = 15 m/s west is the final velocity

t = 10 s is the time taken

Plugging numbers into the formula, we find

`a=(15 m/s-10 m/s)/(10 s)=0.5 m/s^2`

and the direction is west, because the shark speeds up in the same direction of the initial velocity, so the acceleration is positive and therefore in the same direction.