1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Anika [276]
2 years ago
8

Please help asap

Physics
2 answers:
posledela2 years ago
4 0

Answer:

A

Explanation:

the object's mass determines the speed of the object and its kinetic energy

soldier1979 [14.2K]2 years ago
3 0
An object with more mass or weigh will fall faster giving it more kinetic energy. So the answer would be…

B.
You might be interested in
n 38 g rifle bullet traveling at 410 m/s buries itself in a 4.2 kg pendulum hanging on a 2.8 m long string, which makes the pend
Kitty [74]

Answer:

68cm

Explanation:

You can solve this problem by using the momentum conservation and energy conservation. By using the conservation of the momentum you get

p_f=p_i\\mv_1+Mv_2=(m+M)v

m: mass of the bullet

M: mass of the pendulum

v1: velocity of the bullet = 410m/s

v2: velocity of the pendulum =0m/s

v: velocity of both bullet ad pendulum joint

By replacing you can find v:

(0.038kg)(410m/s)+0=(0.038kg+4.2kg)v\\\\v=3.67\frac{m}{s}

this value of v is used as the velocity of the total kinetic energy of the block of pendulum and bullet. This energy equals the potential energy for the maximum height reached by the block:

E_{fp}=E_{ki}\\\\(m+M)gh=\frac{1}{2}mv^2

g: 9.8/s^2

h: height

By doing h the subject of the equation and replacing you obtain:

(0.038kg+4.2kg)(9.8m/s^2)h=\frac{1}{2}(0.038kg+4.2kg)(3.67m/s)^2\\\\h=0.68m

hence, the heigth is 68cm

4 0
3 years ago
There are great similarities between electric and gravitational fields. A room can be electrically shielded so that there are no
ella [17]

Answer:

Can a room be gravitationally shielded? No, it can't.

Explanation:

the room cannot be gravitationally shielded because there is only one gravitational charge, in this case is mass. Mass can always be positive. the room can be electrically shielded because there are two type of charge, positive and negative charge than can cancel each other out.

7 0
3 years ago
If X be a vector 3 X represents  3 added to X  3 times of X  the ratio of X and 3  None
jolli1 [7]

Answer:

The correct option is;

3 times of X

Explanation:

The algebraic properties of a vector are;

Multiplicative identity for real numbers 1

1P = P for each P

Scalar associative property = r(sP) = (rs)P

Scalar distributive property (r + s)P = rP + sP

Vector distributive property r(P + Q) = rP + rQ

Additive inverse of a vector such that a vector P has an inverse -P such that we have;

P + (-P) = 0

Vector associative property (P + Q) + R = P + (Q + R)

Vector commutative property P + Q = Q + P.

3 0
2 years ago
A ball is thrown upward with
Andrews [41]

Answer:

1.020408163s only......

4 0
2 years ago
A skater increases her speed from 5.0 m/s to 10 m/s in 5 seconds. What is the acceleration of the skater?
forsale [732]

Answer:

1 m/s^2

Explanation:

The acceleration of an object is the rate of change of velocity of the object; it is given by:

a=\frac{v-u}{t}

where

u is the initial velocity of the body

v is its final velocity

t is the time elapsed

In this problem, we have:

u = 5.0 m/s is the initial velocity of the skater

v = 10.0 m/s is the final velocity

t = 5 s is the time elapsed

Therefore, the acceleration of the skater is:

a=\frac{10-5}{5}=1 m/s^2

8 0
3 years ago
Other questions:
  • A car, traveling at , encounters a dip in the road. The radius of curvature at the bottom of the dip is . Each of the car’s four
    11·1 answer
  • Boyle's law says that the volume of a gas varies inversely with the pressure. When the volume of a certain gas is 4l , the press
    12·1 answer
  • Convert 525 pounds to kilograms using dimensional analysis setup
    11·1 answer
  • Meteors start to break up in the stratosphere true or false​
    10·2 answers
  • The gravitational force acting on a lead ball is much larger than that acting on a wooden ball of the same size. Which statement
    8·1 answer
  • Which wave causes the medium to vibrate only in a direction parallel to the wave’s motion?
    15·2 answers
  • which of the following described qualitative data? a. recording the temperature of a solid as it is warmed. b. noting the color
    14·2 answers
  • The circuit diagram below shows the locations of four switches. Which
    14·1 answer
  • How much gravitational force do two lead balls with a mass of 8 kilograms, the centers of mass of which are 17 cm apart, affect
    11·1 answer
  • The student lets the toy car roll down the slope. describe how the student could find, by experiment the speed of the toy car at
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!