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
a_sh-v [17]
3 years ago
7

A young athlete has a mass of 42 kg. On a day when there is no wind she runs a 100m race in 14.2

Physics
1 answer:
Cloud [144]3 years ago
3 0

Answer:

7 m/s approx

Explanation:

Step one:

Given data

Mass m= 42kg

distance covered= 100m

time taken = 14.2 seconds

Required

The speed of the athlete

Step two:

We know that speed= distance/time

Substitute

Speed= 100/14.2

Speed= 7.04 m/s

Speed= 7 m/s approx

You might be interested in
A 0.15 kg ball is moving with a velocity of<br> 35 m/s. Find the momentum of the ball.
GarryVolchara [31]

Answer:

<h2>5.25 kg.m/s</h2>

Explanation:

The momentum of an object can be found by using the formula

momentum = mass × velocity

From the question we have

momentum = 0.15 × 35

We have the final answer as

<h3>5.25 kg.m/s</h3>

Hope this helps you

4 0
3 years ago
Two balls are thrown from a cliff. One is thrown directly up, the other directly down. Both balls have the same initial speed, a
Otrada [13]

Answer:

both the same

Explanation:

When a ball is thrown vertically upwards, it experiences that same acceleration due to gravity as an object thrown directly downwards.

This means that if we ignore the effects of air resistance, and the two balls have the same initial speed, they are expected both expected to hit the ground at the same speed as a result of the principle of conservation of energy.

8 0
3 years ago
Samples of different materials, A and B, have the same mass, but the sample
madam [21]

Answer:

<u><em>A.)</em></u> The particles that make up material A have more mass than the

particles that make up material B.

HOPE that helps!!! :)

4 0
2 years ago
Storage of unlimited quantities of energy in batteries is possible. TrueFalse
dangina [55]

False

It is impossible to get infinite energy let alone to put it inside one battery

3 0
3 years ago
Read 2 more answers
The function of a capacitor in an electric circuit is to?
Tema [17]

Well let's see:

A). No.  A capacitor doesn't measure anything.

B). No.  The power delivered to the circuit is determined by
              the battery or power supply and all the things in
              the circuit that dissipate energy.  A capacitor doesn't
              do any of these things.

C). No.  If any current actually flows between its plates,
             the capacitor is shot and can't do its job, and
             must be replaced.

D). Yes. A capacitor stores charges on its plates, and
              electrical energy in the field between its plates.
   
4 0
3 years ago
Other questions:
  • If you lift two loads up one story, how much work do you do compared to lifting just one load up one story?
    14·1 answer
  • The three-toed sloth is the slowest moving land mammal. On the ground, the sloth moves at an average speed of 0.037 m/s, conside
    6·1 answer
  • A violin with string length 32 cm and string density 1.5 g/cm resonates in its fundamental with the first overtone of a 2.0-m or
    10·1 answer
  • The old rubber boot has two leaks. The top of the boot is 0.3 m higher than the leaks. What is the velocity of the water coming
    12·1 answer
  • If you wish to take a picture of a bullet traveling at 500 m/s, then a very brief flash of light produced by an RC discharge thr
    11·2 answers
  • Technician A says that current is created in the stator windings of an alternator. Technician B says that the voltage regulator
    8·1 answer
  • Pleeeeeeease help asap
    10·1 answer
  • A roller of radius 12.5 cm turns at 14 revolutions per second. What is the linear velocity of the roller in meters per second?
    11·2 answers
  • Hello, I wanted an answer from a mathematician. The number 1.04 is closer to the number 1, 2, 1.25 or 1.5.
    5·1 answer
  • What is the electric current if a resistance of 100 Q and voltage of 12.0 V?
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!