All categories

3 years ago

1. In a motor vehicle crash, as a car crushes, it absorbs some of the force of the collision.

Physics

2 answers:

Volgvan3 years ago

5 0

I'm pretty sure the answer is true

zhenek [66]3 years ago

3 0

Answer 1:

True

Explanation:

Especially, cars are intended to crush and consume some of the collision. However, they cant crumple too enough or our legs will get crushed also, which is not good. Its all based on the postulate that the force of the collision is less if the entire deceleration takes place over a prolonged duration of time. The car crumpling tries to increase the deceleration time.

You might be interested in

Multiple-Concept Example 6 reviews the concepts that play a role in this problem. A diver springs upward with an initial speed o

adell [148]

Answer:

Part a)

$v_f = 7.99 m/s$

Part b)

$y = 3.25 m$

Explanation:

Part a)

Since the diver is moving under gravity

so here its acceleration due to gravity will be uniform throughout the motion

so here we will have

$v_f^2 - v_i^2 = 2 a y$

here we have

$v_i = 2.22 m/s$

$y = -3 m$

$v_f^2 - (2.22)^2 = 2(-9.81)(-3)$

$v_f = 7.99 m/s$

Part b)

at highest point of his motion the final speed will be zero

so we will have

$v_f^2 - v_i^2 = 2 a (\Delta y)$

$0 - 2.22^2 = 2(-9.81)(y - 3)$

$y = 3.25 m$

7 0

2 years ago

Why do volcanoes form above subduction zones

Xelga [282]

Volcanoes form above subduction zones because Subduction zone volcanism occurs where two plates are converging on one another. One plate containing oceanic lithosphere descends beneath the adjacent plate, thus consuming the oceanic lithosphere into the earth's mantle. This on-going process is called subduction.

5 0

3 years ago

How does mass and force affect the motion of an object?

djyliett [7]

The greater the mass of an object, the more inertia it has, so the object resists changes to its motion better.

4 0

3 years ago

Read 2 more answers

Which of the following is not a state of matter?

zzz [600]

Water doesn't belong on that list.

If it's removed, then there's a space to add GAS, which does belong.

8 0

2 years ago

If a 20 gram bird and a 0.001 gram mosquito are moving at the same speed, which has the higher kinetic energy?why?

MissTica

Answer:

The bird has 20,000 times higher kinetic energy than the mosquito.

Explanation:

The formula for kinetic energy shows that the amount of energy is proportional to the mass:

$E_k=\frac{1}{2}mv^2$

The velocity of both objects being the same, the mass is the determiner. The ratio of the kinetic energy of the bird and the mosquito then becomes the ratio of their masses, i.e., 0.02kg/0.00001kg. The bird's energy is 20,000 times higher than that of the mosquito. This proportion becomes more believable if you imagine the event of a distracted errant bird colliding with your head, versus a confused mosquito colliding with your head.

8 0

3 years ago