To find force you multiply mass by accelerations; if I have a 5.0 gram Matchbox car accelerating at 7.0 m/sec2 How many Newtons (N) of force will it hit the wall with?
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To calculate the force exerted by the Matchbox car, you can use Newton's second law of motion, which states that the force is the product of mass and acceleration (F = m * a).
Firstly, you need to make sure that the mass is in kilograms (kg) because the standard unit of mass in the International System of Units (SI) is the kilogram. Since the mass of the car is given in grams (g), you need to convert it to kilograms:
5.0 grams = 0.005 kilograms (since 1 kilogram = 1000 grams)
Next, you multiply the mass in kilograms by the acceleration in meters per second squared (m/s^2) to get the force in Newtons (N):
F = m * a F = 0.005 kg * 7.0 m/s^2 F = 0.035 N
Therefore, the Matchbox car will hit the wall with a force of 0.035 Newtons.