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A car of mass 1000 kg is travelling at 20 (m/s). The car crashes into a tree, and comes to a complete halt in 0.05s. Calculate the force acting on the car during the collision.

We are asked for the force acting on the car and we know from Newton's second law that F = ma Therefore, we need to calculate the acceleration first. We use a = (vf - vo)/(t - to) where vf = final speed, ...

PM
Answered by Pablo M. Physics tutor
2955 Views

The perimeter of a right-angled triangle is 72 cm. The lengths of its sides are in the ratio 3 : 4 : 5. Work out the area of the triangle.

As we know the ratio of the sides is 3:4:5, label the sides x,y and z respectively. Side x is of length (3/12)*72, side y is of length (4/12)*72 and side z is of length (5/12)72. Giving, x = 18cm, y =...

VS
Answered by Viresh S. Maths tutor
2565 Views

use the subjunctive mood to express happiness, anger, probability and desire giving examples of each

me llena de alegría que tu hayas casado con élme pone muy enfado que perdieras mi reloj, tiene mucho valor senitmentaldudo que sepa como esquiarquiero que vengas conmigo

JB
Answered by James B. Spanish tutor
1302 Views

Find the turning points of the curve y = 3x^4 - 8x^3 -3

Differentiate to get:dy/dx = 12x^3 -24x^2Factorise and set equal to 0:12x^2(x-2) = 0Solve to get x = 2 and x =0.

DC
Answered by Daniel C. Maths tutor
3417 Views

What are the differences between sound waves and electromagnetic waves?

Propagation:
Sound waves are longitudinal, meaning that the vibrations occur parallel to the direction of propagation (travel).

Electromagnetic wa...

WL
Answered by Wendy L. Physics tutor
59867 Views

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