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melisa1 [442]
2 years ago
15

A car starts from rest and accelerates at 4 m/s2 until it reaches 36 m/s. How far did it travel in this time?

Physics
1 answer:
dexar [7]2 years ago
3 0

The distance of a car that starts from rest and accelerates at 4 m/s² until it reaches 36 m/s is 162m.

<h3>How to calculate distance?</h3>

The distance moved by a body can be calculated using the following formula:

S = ut + ½at²

Where;

  • S = distance
  • u = initial velocity
  • t = time
  • a = acceleration

However, the time taken for the car to complete the acceleration can be calculated as follows:

4 = 36/t

t = 9seconds

S = 0 × t + ½ × 4 × 9²

S = 0 + 162

S = 162m

Therefore, the distance of a car that starts from rest and accelerates at 4 m/s² until it reaches 36 m/s is 162m.

Learn more about distance at: brainly.com/question/15256256

#SPJ1

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Which type of modulation is applied to radio-controlled toys?
Alenkinab [10]

Pulse type of modulation is applied to radio-controlled toys, therefore the correct answer is option D.

<h3>What is the frequency?</h3>

It can be defined as the number of cycles completed per second. It is represented in hertz and inversely proportional to the wavelength.

Toys controlled by remote control operate by emitting infrared radiation. These infrared rays have a frequency of 34–48 kilo Hertz.

Different types of modulations, such as frequency and amplitude modulation for transmitting and receiving video and music, are employed for other reasons.

Thus, the Pulse-type of modulation is applied to radio-controlled toys, therefore the correct answer is option D.

Learn more about frequency from here

brainly.com/question/14316711

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6 0
2 years ago
If a man weighs 750 n on the earth, what would he weigh on jupiter, where the free-fall acceleration is 25.9 m/s2?
Zepler [3.9K]
1982.14N is the answer
4 0
4 years ago
If it takes a ball dropped from rest 2.261 s to fall to the ground, from what height H was it released? Express your answer in m
algol [13]

Answer:

Height, H = 25.04 meters

Explanation:

Initially the ball is at rest, u = 0

Time taken to fall to the ground, t = 2.261 s

Let H is the height from which the ball is released. It can be calculated using the second equation of motion as :

H=ut+\dfrac{1}{2}at^2

Here, a = g

H=\dfrac{1}{2}gt^2            

H=\dfrac{1}{2}\times 9.8\times (2.261)^2

H = 25.04 meters

So, the ball is released form a height of 25.04 meters. Hence, this is the required solution.

7 0
3 years ago
What is the average speed of a train that travels at 100km/hr for 6 hours and then 120km/hr for 5 hours
Sindrei [870]

Answer:

Explanation:

Average speed = Total distance / Total time.

100 km/hr

r = 100 km / hr

t = 6 hours

d = 6 * 100 = 600 km

120 km / hr

r = 120 km / hr

t = 5 hour

d = 120 * 5

d = 600 km

Total distance = 600 + 600 = 1200 km

Total time = 5 hour + 6 hours = 11 hours.

Average speed = 1200 km / 11 hours = 109.1

5 0
3 years ago
Does anyone know number 19 and 23?
Georgia [21]
For 19 it's (d) mass.
6 0
3 years ago
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