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
enot [183]
3 years ago
13

A toy car moves 8 m in 4 s at the constant velocity. whats the car's velocity?

Physics
2 answers:
KIM [24]3 years ago
8 0
Velocity is calculated by distance and time

v = d/t
v = 8m/4s
v = 2 m/s

It's velocity is 2 meters per second 
Lynna [10]3 years ago
7 0

Speed  =  (distance covered) / (time to cover the distance)

           =        (8 m)            /          (4 s)

           =         ( 8 / 4 )  m/s

           =             2 m/s   .  

That 's the toy car's speed.  We can't tell its velocity,
since we have no information about its direction.          

You might be interested in
if the coefficient of linear expansion of a metal is 2.05× 10^-6 k^-1 what will be its new length if 50cm metal went through a t
boyakko [2]

Answer:

L = L0 (1 + c T)   where c is the coefficient and T the change in temperature

L = 50 ( 1 + 2.05E-6 * 50) = 50.0051 cm

7 0
2 years ago
A tuning fork is struck and is vibrating at a single frequency. If a second tuning fork with the same frequency is placed near t
irina1246 [14]
Forced Vibration hope this helps :P
6 0
3 years ago
Read 2 more answers
A diamond with a mass of 45 g hangs motionless from a chain. what is the upward force of the chain on the diamond?
Oksi-84 [34.3K]
The upward force of the chain on the diamond would be the tension in the chain, and this tension would have to support the weight of the 45g that hangs from the chain.

mass = 45 g = 45/1000 kg = 0.045kg

Weight = mg = 0.045 * 10 ≈ 0.45N,            g ≈ 10 m/s²

<span>So the upward force is ≈ </span><span>0.45N. </span>
6 0
3 years ago
How is the radiating electric field (or electromagnetic signal) produced when radio stations broadcast
Natali5045456 [20]

Answer:

Radio stations have dipole type antennas

this field increases in intensity and propagates outwards,

Explanation:

Radio stations have dipole type antennas, that is, all sides are isolated from each other, when the AC signal from the radio station arrives, the lcharge begins at times and by the Lens law a field appears that opposes this movement, this field increases in intensity and propagates outwards, when the voltage reaches a maximum, the generated wave also reaches the maximum, now the incident wave begins to decrease, an electric hand appears to oppose this prisoner, and in this way a cap is created. electric .

5 0
3 years ago
A halfback on an apparent breakaway for a touchdown is tackled from behind. If the halfback has a mass of 98 kg and was moving a
uranmaximum [27]

Answer:

The mutual speed immediately after the touchdown-saving tackle is 4.80 m/s

Explanation:

Given that,

Mass of halfback = 98 kg

Speed of halfback= 4.2 m/s

Mass of corner back = 85 kg

Speed of corner back = 5.5 m/s

We need to calculate their mutual speed immediately after the touchdown-saving tackle

Using conservation of momentum

m_{h}v_{h}+m_{c}v_{c}=m_{h+c}v_{h+c}

Where, m_{h}= mass of halfback

m_{c}=mass of corner back

v_{h}= velocity of halfback

v_{c}= velocity of corner back

Put the value into the formula

98\times4.2+85\times5.5=(98+85)\times v

v=\dfrac{98\times4.2+85\times5.5}{98+85}

v=4.80\ m/s

Hence, The mutual speed immediately after the touchdown-saving tackle is 4.80 m/s

3 0
3 years ago
Other questions:
  • Which of the following is not an example of Newton’s third law?
    10·1 answer
  • What does friction oppose
    7·1 answer
  • Which cell part distinguishes a eukaryotic cell?
    15·2 answers
  • A 50kg skater at rest on a frictionless rink throws a 2kg ball, giving the ball a velocity of 10m/s. Which statement describes t
    14·1 answer
  • A baseball bat could be considered a uniform rod. It ha a mass of 0.97 kg and a length of 97 cm. If a player accelerates it from
    12·2 answers
  • As a runner crosses the finish line of a race, she starts decelerating from a velocity of 9 m/s at a rate of 2 m/s^2. Take the r
    6·1 answer
  • Which of the following is MOST needed for cosmologists to study the age of the universe? A. Energy levels B. Static C. Size D. D
    5·2 answers
  • Everything is made up of blank and all matter is made of blank. There are three basic parts of atom: protons,neutrons, and blank
    8·1 answer
  • How do you calculate gravity’s pull?
    8·2 answers
  • How do you find out the missing masses in a balloon
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!