2 years ago

A 50kg ball rolls off a building it is going 5 m/s when it hits the ground. How tall is the building

Mathematics

1 answer:

kifflom [539]2 years ago

4 0

Answer:

1.25m

Step-by-step explanation:

s=ut+1/2gt^2

Newton's second law of motion

F=ma

50x10

500N

500/50

g/a=10m/s^2

u=0m/s

s= 1/2gt^2

v=u+gt

5=0+(10t)

5=10t

t=0.5s

s=0.5×10×(0.5)^2

=1.25m

You might be interested in

6 Jenna bought n notebooks which cost 5 dollars each, and 3 pens which cost r dollars each. How much money did she spend?

lana66690 [7]

The answer should be 5n+3r

8 0

3 years ago

Which function models the area of a rectangle with side lengths of 2x - 4 units and x + 1 units?

aalyn [17]

Answer:

Area of rectangle, $f(x)=2x^2-2x-4$ .

Step-by-step explanation:

We are given with side lengths of a rectangle are (2x-4) units and (x+1) units. It is required to find the area of rectangle.

The area of a rectangle is equal to the product of its length and breadth. It is given by :

$A=L\times B$

Let us consider, L = (2x-4) units and B = (x+1) units

Plugging the side lengths in above formula:

$A=(2x-4)\times (x+1)$

$A=2x^2+2x-4x-4\\\\A=2x^2-2x-4$

So, the function that models the area of a rectangle is $f(x)=2x^2-2x-4$ .

5 0

3 years ago

Johnny rode his bike 4/7 of a mile from his house to the lake on a straight path. then, he turned around and rode his bike 3/1/8

iren [92.7K]

I hope this helps you

3 1/8=3.8+1/8=25/8

25/8-4/7

25.7/8.7-4.8/7.8

175-32/56

143/56

2 31/56

7 0

3 years ago

Read 2 more answers

I need help with this problem

erik [133]

I think the answer is 400 square centimetres

8 0

3 years ago

Can someone help me with the meaning of percent

LekaFEV [45]

69 out of 100 would be 69/100 = 0.69 = 69% were answered correctly

100% - 69% = 100-69 = 31 = 31% = 31/100 were incorrect

8 0

3 years ago