A James was travelling to Cornwall
on his holidays. This distance-time
graph illustrates his journey.
Az
gra
3
250
200
150
100
50
100
200
3.00 pas
400
500 -
600 pm
700
v
(a) His greatest speed was on the motorway.
i) How far did he travel along the motorway?
ii) What was his average speed on the motorway?
(b) i) When did he travel most slowlydin 2 pon
ii) What was his lowest average speed?

Excuse ! extra points plus ! super desperate ! the position of an object does not move relative to a reference point. relative to the reference point the object _. a.) is not moving. b.) is moving.

Two forces produce equal torques on a door about the door hinge. the first force is applied at the midpoint of the door; the second force is applied at the doorknob. both forces are applied perpendicular to the door. which force has a greater magnitude?

Consider a double atwood machine constructed as follows: a mass 4m is suspended from a string that passes over a massless pulley on frictionless bearings. the other end of this string supports a second similar pulley, over which passes a second string supporting a mass of 3m at one end and m at the other. using two suitable generalized coordinates, set up the lagrangian and use the lagrange equations to find the acceleration of the mass 4m when the system is released. explain why the top pulley rotates even though it carries equal weights on each side.