PLEASE HELP !!

if ur riding a bike uphill do you want the output force to be greater than the input force or does the output force have to be l

andrey2020 [161]

Answer: you want your input force harder

Explanation:

8 0

3 years ago

While Bob is demonstrating the gravitational force on falling objects to his class, he drops an 1.0 lb bag of feathers from the

BartSMP [9]

In the experiment of free fall bob released a bag of mass 1 lb

so here we can say that initial speed of the bag is Zero

time taken by the bag to free fall is given as

t = 1.5 s

also the acceleration of free fall is given as

a = 9.8 m/s^2

now we will use kinematics equation here for finding the distance of free fall

$d = v_i * t + \frac{1}{2} at^2$

$d = 0 + \frac{1}{2}*9.8* 1.5^2$

$d = 4.9 * 2.25$

$d = 11.025 m$

so the bag will fall down by total distance of 11.025 m from its initial released position.

3 0

4 years ago

If the kinetic and potential energy in a system are equal, then the potential energy increases. What happens as a result?

Fittoniya [83]

Answer:

The Kinetic Energy decreases. The Total Energy stays the same

Explanation:

The TE stays the same, so if PE increases then KE will decrease.

7 0

4 years ago

What is the speed of sound in air at 40°C? 355 m/s 307 m/s 331 m/s 239 m/s

Vikki [24]

This is not a good answer, because some one t o forgot to tell us the important temperature, and the given atmospheric pressure "at sea level" makes really no sense. In SI units with dry air at 20°C (68°F), the speed of sound c is 343 meters per second (m/s).

3 0

3 years ago

Read 2 more answers

10. A book has a mass of 400 g. The surface of the book in contact with a table has dimensions 0.10m x 0.20 m. The gravitational

morpeh [17]

The pressure exerted on the table due to the book is 200 N/m².

The given parameters;