All categories

2 years ago

Alan travels 100 km in 5hrs. Find his average speed in km/h

Physics

2 answers:

fgiga [73]2 years ago

5 0

Answer:

<h3>The answer is 20 km/hr</h3>

Explanation:

The average speed of an object given the time and distance covered can be found by using the formula

$a = \frac{d}{t} \\$

where

d is the distance

t is the time

From the question

d = 100 km

t = 5 hrs

We have

$a = \frac{100}{5} \\$

We have the final answer as

Hope this helps you

Neporo4naja [7]2 years ago

3 0

25 km/h hope this helps

You might be interested in

What is the momentum of a 0.000015 kg mosquito flying straight at you with a velocity of 5.20 m/s?

Setler [38]

Answer:

Momentum, $p=7.8\times 10^{-5}\ N-m$

Explanation:

Given that,

Mass of a mosquito, m = 0.000015 kg

Velocity of the mosquito, v = 5.2 m/s

We need to find the momentum of the mosquito. The momentum of an object is given by :

p = mv

Put all the values in the above formula.

$p=0.000015\ kg\times 5.2\ m/s\\\\p=0.000078\ N-m\\\\\text{or}\\\\p=7.8\times 10^{-5}\ N-m$

So, the momentum of the mosquito is $7.8\times 10^{-5}\ N-m$ .

3 0

2 years ago

You have two identical beakers A and B. Each beaker is filled with water to the same height. Beaker B has a rock floating at the

gregori [183]

Answer:

a) if we assume that the water does not spill, Beaker B weighs more than beaker S, or which in this case Beaker A weighs more

b) If it is spilled in water the weight of the two beakers is the same

Explanation:

The beaker weight is

beaker A

W_total = W_ empty + W_water

Beaker B

W_total = W_ empty + W_water + W_roca

a) if we assume that the water does not spill, Beaker B weighs more than beaker S, or which in this case Beaker A weighs more

b) If it is spilled in water, the weight of the two beakers is the same because the amount of liquid spilled and equal to the weight of the stone, therefore the two beakers weigh the same

4 0

2 years ago

HEY CAN ANYONE PLS ANSWER DIS!!!!!!!!!!!!!!!

Troyanec [42]

Answer:

Explanation:

you can seperate mixtures by filtration, evaporation, distillation and chromatography.

3 0

3 years ago

Read 2 more answers

Two light bulbs have resistances of 400 Ω and 800 ΩThe two light bulbs are connected in series across a 120- V line. Find the cu

Natasha2012 [34]

1) Current in each bulb: 0.1 A

The two light bulbs are connected in series, this means that their equivalent resistance is just the sum of the two resistances:

$R_{eq}=R_1 + R_2 = 400 \Omega + 800 \Omega=1200 \Omega$

And so, the current through the circuit is (using Ohm's law):

$I=\frac{V}{R_{eq}}=\frac{120 V}{1200 \Omega}=0.1 A$

And since the two bulbs are connected in series, the current through each bulb is the same.

2) 4 W and 8 W

The power dissipated by each bulb is given by the formula:

$P=I^2 R$

where I is the current and R is the resistance.

For the first bulb:

$P_1 = (0.1 A)^2 (400 \Omega)=4 W$

For the second bulb:

$P_1 = (0.1 A)^2 (800 \Omega)=8 W$

3) 12 W

The total power dissipated in both bulbs is simply the sum of the power dissipated by each bulb, so:

$P_{tot} = P_1 + P_2 = 4 W + 8 W=12 W$

3 0

2 years ago

Why dont animal cells need chloroplasts?

Zigmanuir [339]

Animals don't make Their own food. they instead depend on the food made by plants. hence no need for chloroplasts

3 0

2 years ago

Read 2 more answers

Alan travels 100 km in 5hrs. Find his average speed in km/h​

Alan travels 100 km in 5hrs. Find his average speed in km/h