Select which subject you are studying

11+ Entrance Exams
Accounting
Applied Behavioural Analysis (ABA)
Applying for Medicine
Applying for Oxbridge
Applying for University
Arabic
Art & Drama
Bengali
Biology
Business
Career Advice
Chemistry
Chinese
Computer Science
Dutch
Economics
Engineering
English
French
General
Geography
German
Graphic Design
History
Islamic Studies
Italian
Japanese
Korean
Law
Maths
Music
Philosophy
Physics
Politics
Programming
Psychology
Quraan
Religious Studies
Science
Sociology
Spanish
Sports
Study Skills
University
Urdu

Select which level you are studying at

Primary
Secondary
GCSE
A-Level
Undergraduate
Other
Plus icon

And one of our tutors will answer in as little as 5 minutes

Physics

Asked by Neo

It is likely that you can hit someone in the stomach, for example at a speed of 15 m / s ? (the person performing the blow is normally strong)

If you Google average speeds of vehicle you will notice that the typical speed for a car is 13 - 30 m/s. So, unless you can punch someone as fast as a car, I doubt it

Andres's profile picture
Andres Arcia Lopez
·

3.6k students helped

Physics

Asked by Holly

A ball is thrown vertically into the air with an initial velocity of 19 m/s. What height will it travel upwards before it starts to reverse its direction?

Given parameters are: Initial velocity of the ball (u) =19m/s. The velocity of the ball at maximum height (v) = 0. g = 9.8m/s^2 Let us consider the maximum height as H. Consider the formula, 2gH = v^2– u^2 2 × (- 9.8) × H = 0 – (19)^2 – 19.6 H = – 361 H = 18.418 m. Therefore, The ball will travel a maximum height of 18.418m upwards before it starts to reverse its direction. Feel free t... more

Karan's profile picture
Karan Mahendra Jain
·

2.5k students helped

Physics

Asked by Pema

What is the relationship between physic, technology and nature

Physics is a description of the fundamental laws which govern how matter, forces and waves interact. Our understanding of Physics is incomplete and improving over time, but the laws themselves are fixed. Nature consists of all the naturally occurring (i.e. not man-made) objects in the universe, e.g. planets, stars, rocks, trees, animals etc. Technology is invented by humans and used to build artif... more

David's profile picture
David Ingram
·

126 students helped

Physics

Asked by Angel

The student needs to develop the experiment to determine the loss in potential energy and the gain in kinetic energy as the toy car is rolling down the slope state two measurements the student must take

Hi Angel, For this question, you would want to measure the mass of the toy car in grams and the height of the slope in meters This is because PE = mgh potential energy= mass x gravitational field strength x height Hope this is helpful.

Emma's profile picture
Emma Berwick
·

7.5k students helped

Physics

Asked by Byron

The bumper cars crash into each other and stop, explain why both bumper cars stop after the crash

Usually, the cars would move because the kinetic energy they had before the crash would have been conserved. In this case, the kinetic energy is not conserved so, they stop moving. The kinetic energy may have been converted into thermal energy.

Rhea's profile picture
Rhea Hossein
·

64 students helped

Physics

Asked by Holly

A ball is thrown vertically into the air with an initial velocity of 19 m/s. What height will it travel upwards before it starts to reverse its direction?

Given parameters are: Initial velocity of the ball (u) =19m/s. The velocity of the ball at maximum height (v) = 0. g = 9.8m/s^2 Let us consider the maximum height as H. Consider the formula, 2gH = v^2– u^2 2 × (- 9.8) × H = 0 – (19)^2 – 19.6 H = – 361 H = 18.418 m. Therefore, The ball will travel a maximum height of 18.418m upwards before it starts to reverse its directi... more

Karan's profile picture
Karan Mahendra Jain
·

2.5k students helped

And one of our tutors will answer in as little as 5 minutes