A bowling ball of mass 4 kg moves in a straight line at 1.77 m/s.
How fast must a Ping-Pong ball of mass
3.902 g move in a straight line so that the two
balls have the same momentum?
1. 28632.9
2. 12495.4
3. 1814.45
4. 10997.6
5. 6772.95
6. 7262.84
7. 9888.89
8. 6956.14
9. 25000
10. 17255.3
Answer in units of m/s.

As newton's first law states a object in motion stays in motion

Ithink it’s: light bounce if off a mirror

Answer: a charge of -1.0  × 10⁻⁴ c must be placed  at x = 26 m.the sign of the charge will be the same sign as the  -4.0  µc charge.======electricstatic force between two point charges  is given by    where k is coulomb's constant,  8.99×10⁹  n·m²/c², q₁ and q₂ are the point charges, and r is the distance between the two point charges.assign positive to q₁let q₁ =  6.0 µc, q₂ = -4.0  µc, q₀ represent the charge at the origin, and q₃ represent this new charge to place.the charge at the origin q₀ would experience the following force f₀₁ from q₁, with r = 6.0 m (note that 1  µc = 10⁻⁶ c)    the force from q₂    the force from q₃    the net force on the origin charge, q₀, has to be zero for no electrostatic forcehaving an equation where k and q₀ can be divided out of the equation will allow us to solve for q₃    isolating:     a charge of -1.0  × 10⁻⁴ c must be placed  at x = 26 m.the sign of the charge will be the same as the  -4.0  µc charge