Answer:
57.1 km/hr
Explanation:
To find the average speed you take the total distance divided by the total elapsed time.
So, the total distance is 140 + 60 = 200
the total elapsed time is found by taking 140/70=2 and 60/40=1.5
2+1.5=3.5
The plug the numbers into the equation,
200/3.5=57.1
Answer:
A.−2.1 × 10^10 N
Explanation:
Using the formula;
E = k Q1Q2/d²
Where;
E is the electrical force
k is the constant
Q1, Q2 are the two charges and
d is the distance between the two charges
Therefore;
E = (9 x 10^9) × (0.0042) × (-0.0050) / (0.0030)²
= -2.1 x 10^10 N
Therefore; electrical force acting between the two charges is -2.1 x 10^10 N.
Answer:
The gravitational force is 
Explanation:
Given that,
Mass of large ball = 8.4 kg
Mass of small ball = 0.061 kg
Separation = 0.057 m
Gravitational constant 
We need to calculate the gravitational force
Using formula of gravitational force
Put the value into the formula
Hence, The gravitational force is
The fish is actually farther from you then you think
Considering the definition of impulse, the impulse of the force is 11.06 N×s.
<h3>Impulse</h3>
Impulse is a term that quantifies the overall effect of a force acting over time.
In other words, the mechanical impulse of a force relates said force to the duration of its action. It is a vectorial magnitude that has the direction and sense of the force that produces it.
The impulse I is the product between a force and the time during which it is applied:
I= force× time
The unit of the impulse is the N×s (newton per second).
<h3>This case</h3>
In this case, you know:
- Force= 1400 N
- Time= 0.0079 seconds
Replacing in the definition of impulse:
I= 1400 N× 0.0079 s
Solving:
<u><em>I= 11.06 N×s</em></u>
The impulse of the force is 11.06 N×s.
Learn more about impulse:
<u>brainly.com/question/13333793?referrer=searchResults</u>
