phsycis p5
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34 questions
| 🇬🇧 | 🇬🇧 |
| What is scalar and vector quantities | Scalar on gives distance (magnitude) and vector gives both size and distance |
| What is friction | Back on ground (2 objects going against each other) |
| What is difference between weight and mass | Mass is the amount of matter an object has (which is how heavy it is) and weight is the measure of how strong gravity pulls on the mass (in newtons) |
| What is air resistance | Back in air |
| What is thrust | Forward in air |
| What is resultant force | The overall force acting on an object |
| If an object is moving and it and forces are equal? | Stays at constant speed |
| Which are scalar and which are vector?: speed, velocity, displacement, force, weight, mass, energy , acceleration, time, distance | Scalar: speed, distance, time, mass, energy vector: velocity, force, weight, acceleration |
| Difference between Distance and displacement | How far an object moves without direction displacement is both |
| Difference between scalar and vector | Scalar is magnitude but no direction while vector is both |
| Difference between weight and mass | Mass is the amount of matter an object has, and weight is how strong gravity pulls on an object |
| What is difference between contact and none contact force | Contact force two objects physically and none contact does not |
| Force= | Mass x accceleration |
| Gpe= | Mass x gfs x height |
| Work done(J) =? | Force x distance |
| How can 2 boys the same size and speed have different momentums when moving in different directions. | Different directions = different velocity = different momentum |
| What is momentum | Momentum is a measure of how difficult it is to stop a moving object |
| Momentum= | Mass x velocity |
| Acceleration when not given time | (final velocity^2 (m/s) - initial velocity^2) = 2 x acceleration x distance |
| And if the velocity changes | Final velocity - initial velocity / time |
| How to calculate acceleration(m/s^2) when given the time | Change in velocity(m/s)/ time(s) |
| Difference between speed and velocity | Speed is how fast an object is moving, while velocity is how fast in a certain direction. |
| Speed= | Distance (m) / time (s) |
| Energy stored in spring=? | 0.5 x spring constant x extension^2 |
| Force in a spring=? | Force (n)= spring constant(n/m) x extension(m) |
| Elastic protentional= ? | 0.5 x spring constant x extension^2 |
| What is work done | The amount of energy transferred for an object to move a certain distance |
| If question in grams what do you do to get it to kg | Divide by 1000 |
| Weight (N)=? | Mass(kg) x gfs(N/Kg) |
| How to calculate resultant force when an object changes direction | Measure out both directions and find how far it is from the starting point to the end point. then find the distance through the middle which forms a triangle the distance connecting both start and end is your answer. (remember newtons = cm or told otherwise) (Also if not given direction do it how u want) |
| When calculating resultant force what do you do if the distance is large. | Make 1 cm = 100cm (for example if you have to plot a distance of 500cm make 1 cm = 100 and you'll have to do 5 cm. For your answer x by how much you made cm equal to so x the answer by 100) |
| How to calculate resultant force when 2 forces are acing on an object ant the same time. | You will need to draw a Parallelogram start by drawing a straight flat line with the given newtons (remember newtons = cm) use a protractor to draw a line in the direction of the angle given with the number of newtons given. Finish off the parallelogram the opposite sides are equal and draw a line through the centre which is the resultant force. |