604 views

### A ball is thrown out of a window 18m off the ground. It is thrown horizontally at 0.5m/s. Show that it takes about 2s to reach the ground

Using the initial information we can see that the acceleration in the 'y' direction is equal to 'g', so from this we can work out the velocity in the 'y' direction 'V(y)' by simply integrating the acceleration with respect to time; so V(y) = 9.8t +c and as the ball is initially at rest c=0. By intergrating the velocity in the y direction V(y) we can then obtain the displacement in the y direction 'S(y)'. So S(y)=0.5*gt2+k. Now as we are taking the window as the origin k=0. So S(y)=0.5*gt2. When the ball hits the ground the displacement it 18m or S(y)=18. Using our formula for S(y), we can solve for t. t comes out to be 1.92 to 2 d.p, which is roughly 2.

1 year ago

## Still stuck? Get one-to-one help from a personally interviewed subject specialist

#### 147 SUBJECT SPECIALISTS

£30 /hr

Degree: Physics (Masters) - Durham University

Subjects offered:Physics, Music+ 4 more

Physics
Music
Maths
Further Mathematics
Chemistry
-Personal Statements-

“Hello everyone! My name is Anuradha (you can call me Anu), and I am a Physics Undergrad at Durham. I have always had a “thing” for science and am so pleased to be studying it – and hope that I can give you all the support you need to ...”

£30 /hr

Degree: Physics (Masters) - Oxford, Balliol College University

Subjects offered:Physics, Science+ 8 more

Physics
Science
Maths
Further Mathematics
Chemistry
.STEP.
.PAT.
.MAT.
-Personal Statements-
-Oxbridge Preparation-

“A friendly and understanding tutor with four years experience in school clubs, summer camps and private tutoring.”

£26 /hr

Degree: Medical Sciences (Bachelors) - Exeter University

Subjects offered:Physics, Science+ 4 more

Physics
Science
Maths
Chemistry
Biology
-Personal Statements-

“Hi, I'm James, a Biology Masters graduate. I'm really passionate about science, and I hope i can share some of my interest with you!”

£20 /hr

Degree: Maths and Physics (Masters) - Durham University

Subjects offered:Physics, Maths

Physics
Maths

MyTutor guarantee

### You may also like...

A ball is thrown out of a window 18m off the ground. It is thrown horizontally at 0.5m/s. Show that it takes about 2s to reach the ground

The shortest side of a triangle is 4.3m long. Two of the angles are 45.1 and 51.2 degrees respectively. Find the length of the longest side.

#### Other A Level Physics questions

A space probe of mass 1000kg, moving at 200m/s, explosively ejects a capsule of mass 300kg. The speed of the probe after the explosion is 250m/s. What is the velocity of the capsule?

Outline the principal features of a geostationary orbit and use them to explain one use of satellites in this type of orbit.

Show Maxwell's equations in free space satisfy the wave equation

A sample of pure gold has a density of 19300 kgm^-3. If the density of a gold nucleus is 1.47x10^17Kgm^-3, discuss what this implies about the structure of the gold atom. [4 marks]

We use cookies to improve your site experience. By continuing to use this website, we'll assume that you're OK with this.