Using the following formula for linear-motion, the missing variable can be solved:

s = Vi * t + 1/2 (a * t^2)

Where: s = displacement = 29.7 m
Vi = initial velocity = 8.5 m/s
a = acceleration = 9.8
t = time = ?

Substituting:

29.7 = 8.5t + 1/2 (9.8*t^2)
29.7 = 8.5t + 4.9t^2

Dividing both sides by 4.9:

6.06 = 1.73t + t^2
t^2 + 1.73t - 6.06 = 0
(t - 1.74)(t + 3.48) = 0
t = 1.74s

From the above values, the correct answer is 1.74 seconds.

3 0

4 years ago

Which of the following refers to stored energy that an object has due to its height?

VLD [36.1K]

Answer : D. Gravitational Potential

Gravitational Potential energy =mgh

5 0

3 years ago

Read 2 more answers

Which of the following accurately describes how scientists use models?

m_a_m_a [10]

Answer: it’s D

Explanation: ap3x approved

8 0

3 years ago

What is the centripetal force acting on a 1.5 kg mass moving in a circular path with a centripetal

zloy xaker [14]

The centripetal force acting on a 1.5 kg mass moving in a circular path is 27N

A centripetal force is a net force acting on an object in order to maintain the object's movement in a circular motion.

According to Newton's first law, it states an object will continue to proceed its movement in a straight line unless acted upon by an external force.

The centripetal force is the external force at work here and It's the net force that propels the object in a circular motion.

Using the formula for calculating centripetal force:

$\mathbf{F_c = mass (m) \times acceleration (a)}$

$\mathbf{F_c = 1.5 \ kg \times18 \ m/s^2}$

$\mathbf{F_c = 27 \ N}$

Learn more about centripetal force here:

brainly.com/question/11324711?referrer=searchResults

8 0

3 years ago