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Anettt [7]
3 years ago
14

A speeding car collides with an unlucky bug flying across the road

Physics
2 answers:
alex41 [277]3 years ago
7 0
<span>The car has more momentum.  (A)*
Also, the car is made out of more resilient material than the bug is.


* Unless the bug is much bigger than the car.</span>
guapka [62]3 years ago
6 0

Answer:

A: The car has more momentum

Explanation:

When we discuss collisions, we are usually referring to a change in momentum. If a car crashes into a wall, then all the momentum that the car had acts on the wall and either decreases (this is where a car would drive through a wall), or change to zero (where the wall would withstand the force).

In this case, the bug and the car have different values of momentum. The car obviously has more because it is both heavier and can be assumed to be travelling a lot faster, this means that there is a negligible amount of force in the opposite, from the bug.

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A 45 N girl sits on a bench 0.6 meters off the ground. How much work is done on the bench?
ycow [4]

Answer: 27 joules

Explanation:

Work is done when force is applied on the bench over a distance. it is measured in joules.

Workdone = force x distance

= 45 N x 0.6 metres

= 27 joules

Thus, 27 joules of work is done on the bench.

6 0
3 years ago
A student examines a 20-meter long rectangular stream channel and takes the following measurements: width of stream = 4 meters,
Scrat [10]

Answer:

The discharge of the stream at this location is 40 cubic meters per second.

Explanation:

The discharge is the volume flow rate of the water in the stream. For this purpose we can use the following formula:

Discharge = Volume Flow Rate = (Cross-Sectional Area)(Velocity of Stream)

Volume Flow Rate = (Width of Stream)(Depth of Stream)(Velocity of Stream)

Volume Flow Rate = (4 meters)(2 meters)(5 meters per second)

<u>Volume Flow Rate = 40 cubic meters per second</u>

Therefore, the discharge of the stream at this location is found to be <u>40 cubic meters per second</u>

This result shows that 40 cubic meters volume of water passes or discharges through this point in a time of one second. Hence, this is called the volume flow rate or the discharge of the stream.

3 0
3 years ago
A mother pats a child every time he throws a chocolate wrapper in the dustbin. This is an example of (A) Observational Learning
TEA [102]
D. I think, not sure
8 0
3 years ago
What are three key aerodynamics principles?
mafiozo [28]

Answer:

A

Explanation:

There are three basic forces in aerodynamics: acceleration, which moves an airplane forward; drag, which holds it back; and height, which keeps it airborne. Lift is generally explained by three theories: Bernoulli's principle, the Coanda effect, and Newton's third law of motion.

8 0
3 years ago
How many newtons of force are represented by the following amount: 3 kg·m/sec^2?
Jet001 [13]
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8 0
3 years ago
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