Ask question

Ask question

All categories

3 years ago

13

A track athlete jumps over a hurdle. What is the equal and opposite force for the force of the athlete pushing on the ground as

described by Newton's third law?

1 answer:

Jet001 [13]3 years ago

6 0

Answer: Normal Force of the ground pushing the athlete up.

Explanation: I did this on Khan Academy and got the answer right.

You might be interested in

If the mess of an object______, the weight of an object will _______

Gnom [1K]

Answer:

the same

Explanation:

7 0

2 years ago

A book, that has a mass of 0.5 grams, is pushed across a table with a force of 20 newtons. What is the acceleration of the book?

Bas_tet [7]

Answer:

$4\cdot 10^4 m/s^2$

Explanation:

The acceleration of an object is given by Newton's second law:

$a=\frac{F}{m}$

where

F is the net force applied on the object

m is the mass of the object

For the book in the problem, we have:

$m=0.5 g =5\cdot 10^{-4} kg$ is the mass

$F=20 N$ is the force applied

Substituting into the formula, we find the acceleration:

$a=\frac{20 N}{5\cdot 10^{-4} kg}=4\cdot 10^4 m/s^2$

6 0

2 years ago

5. Which of these is necessary for electricity to flow?

CaHeK987 [17]

Answer:

the circuit must be closed

Explanation:

4 0

2 years ago

Read 2 more answers

Lisa is conducting an investigation to determine the coefficient of friction between two surfaces. She uses a 25 kg block. What

Paladinen [302]

Answer:

245.25

Explanation:

1 kg is 9.81 newtons

4 0

3 years ago

Read 2 more answers

What speed<br> covers 17 miles in 15 mins?

asambeis [7]

68 miles per hour 1.1333 miles per minute

5 0

3 years ago