Mechanics Random Retrieval

A bullet of mass 4.02 g is fired at a speed of 940 ms^-1 from an SA-80 rifle. The bullet strikes a block of hardwood of mass 0.512 kg hanging at rest from a long string. The bullet enters the wood and becomes lodged in the block. Calculate the initial speed the wooden block from rest immediately after impact.

Select the best statement for Newton's 3rd Law:

A student moves a table in class by pushing it at an angle of 11° with a force of 200 N. Calculate the vertical component.

A Y7 drags behind them their cooking, PE kit and textbooks behind them with a force of 676 N and an angle of 30°. Calculate the vertical component of the force.

Choose the best graph that matches the following scenario: A rugby player accelerates for 3 seconds before making contact and coming to a complete stop. She then accelerates again, until a team mate makes contact with another player and she retreats 10 metres before accelerating forward again.

These graphs show the acceleration of 4 Y9 100 m sprinters. Select the graph which shows student with the greatest acceleration.

Neil Armstrong uses a catapult to horizontally shoot a rock at Buzz Aldrin on the Moon from a height of 2 m. He misses and it lands at Buzz's feed, 20 m from where it was fired.

Calculate the velocity the rock was fired at from the catapult. g_Moon = 1.62 ms^-2

Marvin the Martian fires his gun horizontally at Bugs Bunny at a height of 60 cm. It fires at 550 ms^-1, but misses. Calculate how far away from Marvin the shot lands. g_Mars = 3.71 ms^-2

A school decided to go paintballing for staff team building. The Head of Science aims her paintball gun horizontally 1.6 m above ground at the Headteacher, launching the paintball at 92 ms^-1. She hits him on his thigh, 90cm from the ground. Calculate the distance away the Headteacher was stood. g_Earth = 9.81 ms^-1

Which is the correct definition for acceleration?