U2.1 – Introduction to Mechanics

Select if the following is a scalar or a vector: speed

Select if the following is a scalar or a vector: time

Select if the following is a scalar or a vector: acceleration

Select if the following is a scalar or a vector: force

Select if the following is a scalar or a vector: mass

Select if the following is a scalar or a vector: velocity

Select if the following is a scalar or a vector: length

Select if the following is a scalar or a vector: displacement

Select if the following is a scalar or a vector: momentum

Select if the following is a scalar or a vector: energy

David walks 6 km west then 8 km north. Calculate his displacement.

Achsa runs 1.2 km up at hill with a 40° incline in 438 seconds, calculate her horizontal displacement from her starting position.

A house attached to lots of balloons takes flight at 5.20 ms ^-1 and, due to a cross wind, at an angle of 56° from the horizontal. What would it's vertical speed be assuming there was no wind.

A scuba diver surfaces after a dive. She begins to swim towards the boat at a constant speed of 67 cms^-1 and due to a current in the water this takes her 70 seconds an an angle of 32°. Calculate the time taken if there was no current at the same speed.

A fishing boat travels at 4.6 ms^-1 200° from North towards Whitehaven Harbour Gates, which are 9.4 km away. The boat reaches the harbour, stops and the captain get on her bike and cycles due West from the Harbour Gates at 20 kmph for 25 minutes. Calculate her total displacement.