All categories

2 years ago

A car crashes into a wall with an impulse of 40,000 kg.m/s. The collision took 2 seconds. How much force did the wall exert?

Physics

1 answer:

sesenic [268]2 years ago

5 0

Answer:

i hate physics lol but its 20,000N

Explanation:

You might be interested in

Suppose a vector V makes an angle ϕ with respect to the y axis. Part A What could be the x and y components of the vector V ? Ex

mina [271]

Well i dont know how to explain sorry

8 0

2 years ago

A 4kg ball moving at 8m\sec

Llana [10]

Conservation of momentum: total momentum before = total momentum after

Momentum = mass x velocity

So before the collision:
4kg x 8m/s = 32
1kg x 0m/s = 0
32+0=32

Therefore after the collision
4kg x 4.8m/s = 19.2
1kg x βm/s = β
19.2 + β = 32

Therefore β = 12.8 m/s

8 0

3 years ago

Please help !! ASAP

umka2103 [35]

Answer:

22) 5.6 Kg.m/s

23) 0.067 Kg

24) 1.16 m/s

Explanation:

Momentum is found by multiplying mass and velocity

P=mv where P is momentum, m is mass of object and v is the velocity

Given

Mass, m=2 Kg

Rate, v=2.8 m/s

Relationship

P=mv

Solution

P=mv=2*2.8=5.6 Kg.m/s

Given

Momentum, p=0.1 Kg.m/s

Rate, v=1.5 m/s

Relationship

P=mv and making m the subject then

$m=\frac {P}{v}$

Solution

$m=\frac {0.1 Kgm.s}{1.5 m/s}\approx 0.067 Kg$

Given

Momentum, $p=4.9\times 10^{8} Kg.m/s$

Mass, $m=4.23\times10^{8} Kg$

Relationship

P=mv and making v the subject then

$v=\frac {P}{m}$

Solution

$m=\frac {4.9\times 10^{8} Kgm.s}{4.23\times10^{8} }\approx 1.16 m/s$

5 0

2 years ago

Am i right? be honest

Alina [70]

if A is closer to the x-axis then its "faster"

4 0

2 years ago

Two identical metal spheres a and b are in contact. both are initially neutral. 1.0×1012 electrons are added to sphere a, then t

NeX [460]

Metal is conductive, so electrons will transfer onto sphere b until there is an equal number of electrons on either sphere (the electrical gradient will be zero). This means that 5 x 10^11 electrons will be on either sphere, and since the charge of an electron is 1.602 x 10^-19 Coulombs, multiplying this by the number of electrons gives a charge of 8.01 x 10^-8 Coulombs, or 80.1 nanocoulombs.

7 0

3 years ago

Read 2 more answers