Hi
The answer to this question is B. Reaction
Answer:
Original speed of the bullet = 305.21 m/s
Explanation:
Here momentum is conserved.
Mass of bullet = 9.6 g = 0.0096 kg
Mass of wood = 4.95 kg
Let velocity of bullet be v.
Initial momentum = 0.0096 v
Final mass = 0.0096 + 4.95 = 4.9596 kg
Final velocity = 0.591 m/s
Final momentum = 4.9596 x 0.591 = 2.93 kgm/s
Equating both momentum
0.0096 v = 2.93
v = 305.21 m/s
Original speed of the bullet = 305.21 m/s
The answer is electric potential difference
Answer:
Many objects are designed specifically to store elastic potential energy, for example: The coil spring of a wind-up clock. An archer's stretched bow. A bent diving board, just before a divers jump
Explanation:
Answer:600 miles, 12
Explanation: The movement described in the question exhibits that of a polygon. Exhibiting a constant distance and angle with only varying direction until the starting point is reached.
The sum of exterior angles of a polygon = 360 degrees.
Exterior angle of a polygon = (360 ÷ number of sides)
Therefore,
Number of sides = 360 ÷ exterior angle
Exterior angle = 30 degrees
Hence,
Number of sides = 360 ÷ 30 = 12 sides
Since distance traveled of 50 miles is the same for each displacement ;
Total displacement = distance traveled * number of sides
Total displacement = 50 * 12 = 600 miles.
