Projectile Motion
A ball rolls off a table that is 1.25m high. Calculate the time taken to hit the ground.
0.505sec
This force is required to keep an object moving in a circular path and always points toward the centre of the circle.
What is centripetal force?
This region around a magnet or a moving charge where magnetic forces can be detected is called a…
What is a magnetic field?
Describes a Frame of Reference moving at a constant Speed
Inertial Frame of Reference
This force keeps planets orbiting the Sun and keeps your feet on the ground.
Gravity
A soccer ball is kicked horizontally from a cliff at 8.0m/s. The cliff is 20 m high. Find the horizontal distance travelled before it lands.
16.2m
A car travels in a circle of radius 10 m at a constant speed of 5 m/s. What is the centripetal acceleration?
2.5m/s2
What do dots and crosses represent in the context of magnetic fields.
Dots - out of the page.
Cross - into the page.
This relativistic effect describes how a moving clock is measured to run slower compared to a stationary observer.
Time Dilation
This famous scientist developed the three laws of motion after supposedly being inspired by a falling apple.
Newton
A ball is launched at 15 m/s at an angle of 30∘. Find the initial vertical velocity.
7.5m/s
A 0.5 kg mass moves in a circle of radius 2 m at a speed of 4 m/s. What is the centripetal force acting on it?
4N
This rule is used to determine the direction of force on a current-carrying conductor in a magnetic field.
Right Hand Rule. Must Demonstrate how to use the rule to get points.
A particle travels at 0.8c. What is its Lorentz factor (γ), used in relativistic equations?
1.67
Nothing can travel faster than this universal speed limit.
Speed of Light - IN A VACUUM
A projectile is launched at 20 m/s at 45∘. Find the time of flight.
2.88sec
A 1.2 kg mass is attached to a string and swung in a horizontal circle of radius 1.5 m. The string tension provides a centripetal force of 54 N. What is the speed of the mass?
8.2m/s
A wire carries a current of 3 A in a magnetic field of 0.5 T. The wire length in the field is 0.8 m and is perpendicular to the field. What is the force on the wire?
1.2N
A spaceship moves at 0.6c relative to Earth. If 10 seconds pass on Earth, how much time passes on the spaceship according to time dilation?
8sec
This physicist developed the theory of relativity.
Einstein
A cannon fires a projectile at 25m/s at an angle of 40∘. Find the maximum height.
13.17m
A roller coaster goes around a vertical loop of radius 12 m. At the top of the loop, it just maintains contact with the track (meaning the normal force is zero). What is the minimum speed of the coaster at the top of the loop?
10.8m/s
A charged particle moves at right angles to a uniform magnetic field of 0.2 T with a speed of 5 × 10⁶ m/s. If the particle has a charge of 1.6 × 10⁻¹⁹ C, what is the magnetic force on it?
1.6 × 10⁻¹⁹ N
A mass of 0.002 kg is completely converted into energy in a nuclear reaction. How much energy is released?
1.8 × 1014 J
When is the Research Investigation Due (draft and final)
Draft Week 10
Final Week 3 (next term)