Question

A grumpy cow is dropped off a cliff that is 10 meter high. What is the cow's velocity after it has been falling for 1.5 seconds?

A) 9.8 m/s
B) 14.7 m/s
C) 19.6 m/s
D) 24.5 m/s

Answer 1

The velocity of the cow after falling for 1.5 seconds is determined by the acceleration due to gravity (9.8 m/s^2). The velocity is calculated using the formula v = gt, which results in a velocity of 14.7 m/s. Hence, the correct answer is B) 14.7 m/s.

Step-by-step explanation:

The velocity of a grumpy cow after falling for 1.5 seconds from a 10 meter high cliff can be determined using the laws of motion under the influence of gravity. The force of gravity accelerates all objects at a rate of approximately 9.8 m/s2, irrespective of their mass (assuming there is no air resistance). To calculate the velocity (v) after a certain time (t), we can use the equation of motion v = gt, where g is the acceleration due to gravity.

Plugging in the numbers:

• g = 9.8 m/s2
• t = 1.5 s

We get:

• v = 9.8 m/s2 × 1.5 s
• v = 14.7 m/s

Therefore, the correct answer is B) 14.7 m/s.