QUESTIONS AND ANSWERS

Defining Free Fall Acceleration: Before we tackle the peculiar unit, we will need to clarify what free fall acceleration is. Free fall acceleration is the… Read More »The acceleration of free fall is about 10 m/s2. why does the seconds unit appear twice?

Question vector A has a magnitude 6 units and is in the direction of the +x-axis. Vector B has a magnitude 4 units and lies… Read More »Vector A has a magnitude 6 units and is in the direction of the +x-axis

Question Find the angle between the two vectors A = 2i + 3j + k, and B = -4i + 2j – k Answer The… Read More »Find the angle between the two vectors A = 2i + 3j + k, and B = -4i + 2j – k

Question Find the scalar product A • B of the two vectors. The magnitudes of the vectors are A = 4.00 and B = 5.00.… Read More »Find the scalar product A • B of the two vectors. The magnitude of the vectors are A = 4.00

Question Given the two displacements D = (6i + 3j – k) m, and E = (4i – 5j + 8k) m. Find the magnitude… Read More »Given the two displacements D = (6i + 3j – k) m and E = (4i – 5j + 8k) m

Question What is the acceleration of a 50 kg object pushed with a force of 500 newtons? Answer Problem: Our task is to find the… Read More »What is the acceleration of a 50 kg object pushed with a force of 500 newtons?

Question If Siobhan hits a 0.25 kg volleyball with 0.5 n of force, what is the acceleration of the ball? m/s2 Answer The acceleration of… Read More »If siobhan hits a 0.25 kg volleyball with 0.5 n of force, what is the acceleration of the ball? m/s2

Question Three players on a reality TV show are brought to the centre of a large, flat field. Each is given a meter stick, a… Read More »Three players on a reality TV show are brought to the centre of a large, flat field.

Question What are the X and Y components of vector Ď. The magnitude of the vector is D=3m, and the angle α=45 degrees b) What… Read More »What are the X and Y components of vector Ď. The magnitude of the vector is D=3m

Question The rest energy E of an object with rest mass m is given Einstein’s equation E = mc², where c is the speed of… Read More »The rest energy E of an object with rest mass m is given Einstein’s equation E = mc²

Question The world’s largest cut diamond is the first star of Africa (mounted in the British Royal Sculpture and kept in the tower of London).… Read More »The world’s largest cut diamond is the first star of Africa (mounted in the British Royal Sculpture and kept in the tower of London)

Question The official world land speed record is 1228.0 km/h, set on October 15, 1997, by Andy Green in the jet engine car Thrust SSC.… Read More »The official world land speed record is 1228.0 km/h, set on October

Question A cross-country skier skis 1.00km north and then 2.00km east on a horizontal snow field. How far and in what direction is she from… Read More »A cross-country skier skis 1.00km north and then 2.00km east

Can Light Undergo Total Internal Reflection at a Smooth Interface Between Air and Water? The answer to the question is Yes, light can undergo total… Read More »Can Light Undergo Total Internal Reflection at a Smooth Interface Between Air and Water?

How Are Electromagnetic Waves Different from Mechanical Waves? Electromagnetic waves and mechanical waves represent different modes of energy transfer through space. While they both involve… Read More »How Are Electromagnetic Waves Different from Mechanical Waves?