Question

A mass of 5kg slides across a frictionless table with an initial velocity of 10m/s. The wind starts to blow in the direction the mass is moving, causing it to accelerate at a constant rate. After 2 seconds, the mass is moving at a velocity of 15m/s. What is the acceleration?"

A) 2.5 m/s²
B) 5 m/s²
C) 7.5 m/s²
D) 10 m/s²

Answer 1

The acceleration of the mass is b. 5 m/s².

Step-by-step explanation:

To find the acceleration, we can use the equation:

acceleration = (final velocity - initial velocity) / time

Given that the initial velocity is 10m/s, the final velocity is 15m/s, and the time is 2 seconds, we can substitute these values into the equation:

acceleration = (15m/s - 10m/s) / 2s = 5m/s².

Therefore, the acceleration is 5 m/s².