All categories

2 years ago

A car moved a total distance of 120 km in 90 minutes. What was the speed of the car?

Physics

2 answers:

Igoryamba2 years ago

5 0

The Speed is, 49.7097mph

Vika [28.1K]2 years ago

3 0

Answer:

80 km/hr

Explanation:

We are given that

Total distance covered by the car=120 Km

Time taken by the car=90 minutes= $\frac{90}{60}=1.5 hour$

We have to find the speed of the car

We know that Speed= $\frac{Distance}{time}$

Substitute the value then, we get

Speed= $\frac{120}{1.5}=80 Km per hour$

Hence, the speed of the car=80 km per hour.

You might be interested in

The volume of the nucleus as compared to the volume of the atom is

velikii [3]

The nucleus of an atom is about 10-15 m in size; this means it is about 10-5 (or 1/100,000) of the size of the whole atom. A good comparison of the nucleus to the atom is like a pea in the middle of a racetrack. (10-15 m is typical for the smaller nuclei; larger ones go up to about 10 times that.)

4 0

2 years ago

Jack and Jill exercise in a 25.0 m long swimming pool. Jack swims 9 lengths of the pool in 156.9 s ( 2 min and 36.9 s ) , wherea

Leya [2.2K]

Answer:

Jill average velocity is 0

Jack average velocity is 0.159337

Jill average speed = 1.593372

Jack average speed = 1.434034

Explanation:

given data

long swimming pool = 25.0 m

9 lengths of the pool = 156.9 s ( 2 min and 36.9 s )

10 lengths = same time interval

to find out

average velocity and average speed

solution

we know that average velocity that is express as

average velocity = $\frac{displacement}{time}$ .....................1

Jill come back where she start

so here velocity will be = 0

and

Jack ends up on the other end of pool

so average velocity = $\frac{25}{156.9}$

average velocity = 0.159337

now we get here average speed that is express as

average speed = $\frac{distance}{time}$ .............2

jack speed = 9 × $\frac{25}{156.9}$

jack speed = 1.434034

and

Jill speed = 10 × $\frac{25}{156.9}$

Jill speed = 1.593372

5 0

2 years ago

A water slide is constructed so that swimmers, starting from rest at the top of the slide, leave the end of the slide traveling

solniwko [45]

Answer:

17.86 m

Explanation:

The first step is to find the velocity of the swimmer.

Velocity, v = s/t

Velocity, v = 5 / 0.27

Velocity, v = 18.52 m/s

Then, we find the height

h = ½gt²

h = ½ * 9.8 * 0.27²

h = 4.9 * 0.0729

h = 0.36 m

Next, we apply the law of conservation of energy

mgH = mgh + ½ mv²

9.8Hm = m(9.8 * 0.36 + 0.5 * 18.52²)

9.8H = 3.528 + 171.4952

9.8H = 175.02

H = 175.02 / 9.8

H = 17.86 m

Therefore, the needed height is 17.86 m

8 0

2 years ago

You perform an experiment in which you find out how much mass evaporates from a liquid when it is placed in direct sunlight or i

qaws [65]

The correct option is SCALE.
This is because the experimental data you are interested in is mass and scale is the instrument that is used to measure mass. To use the scale, measure the mass of your water before you put it inside the sun and measure the mass again after you remove it from the sun. The difference in mass is the quantity of water that is evaporated.
There are different type of scale and the one that you use will depend on the size of the material that you want to measure.<span />

5 0

2 years ago

Hideki is having trouble completing long workouts. What does he need to improve?

KonstantinChe [14]

He needs to improve his endurance time.

3 0

2 years ago